Update vendor (#1330)

3 files changed, 272 insertions, 150 deletions

diff --git a/vendor/github.com/Jeffail/gabs/README.md b/vendor/github.com/Jeffail/gabs/README.md
index a58193fd..962ba686 100644
--- a/vendor/github.com/Jeffail/gabs/README.md
+++ b/vendor/github.com/Jeffail/gabs/README.md
@@ -7,21 +7,17 @@ It does nothing spectacular except for being fabulous.
 
 https://godoc.org/github.com/Jeffail/gabs
 
-## How to install:
+## Install
 
 ``` bash
 go get github.com/Jeffail/gabs
 ```
 
-## How to use
+## Use
 
 ### Parsing and searching JSON
 
 ``` go
-...
-
-import "github.com/Jeffail/gabs"
-
 jsonParsed, err := gabs.ParseJSON([]byte(`{
 	"outter":{
 		"inner":{
@@ -29,7 +25,10 @@ jsonParsed, err := gabs.ParseJSON([]byte(`{
 			"value2":22
 		},
 		"alsoInner":{
-			"value1":20
+			"value1":20,
+			"array1":[
+				30, 40
+			]
 		}
 	}
 }`))
@@ -43,26 +42,26 @@ value, ok = jsonParsed.Path("outter.inner.value1").Data().(float64)
 value, ok = jsonParsed.Search("outter", "inner", "value1").Data().(float64)
 // value == 10.0, ok == true
 
+gObj, err := jsonParsed.JSONPointer("/outter/alsoInner/array1/1")
+if err != nil {
+	panic(err)
+}
+value, ok = gObj.Data().(float64)
+// value == 40.0, ok == true
+
 value, ok = jsonParsed.Path("does.not.exist").Data().(float64)
 // value == 0.0, ok == false
 
 exists := jsonParsed.Exists("outter", "inner", "value1")
 // exists == true
 
-exists := jsonParsed.Exists("does", "not", "exist")
-// exists == false
-
 exists := jsonParsed.ExistsP("does.not.exist")
 // exists == false
-
-...
 ```
 
 ### Iterating objects
 
 ``` go
-...
-
 jsonParsed, _ := gabs.ParseJSON([]byte(`{"object":{ "first": 1, "second": 2, "third": 3 }}`))
 
 // S is shorthand for Search
@@ -70,24 +69,25 @@ children, _ := jsonParsed.S("object").ChildrenMap()
 for key, child := range children {
 	fmt.Printf("key: %v, value: %v\n", key, child.Data().(string))
 }
-
-...
 ```
 
 ### Iterating arrays
 
 ``` go
-...
-
-jsonParsed, _ := gabs.ParseJSON([]byte(`{"array":[ "first", "second", "third" ]}`))
+jsonParsed, err := gabs.ParseJSON([]byte(`{"array":[ "first", "second", "third" ]}`))
+if err != nil {
+	panic(err)
+}
 
 // S is shorthand for Search
-children, _ := jsonParsed.S("array").Children()
+children, err := jsonParsed.S("array").Children()
+if err != nil {
+	panic(err)
+}
+
 for _, child := range children {
 	fmt.Println(child.Data().(string))
 }
-
-...
 ```
 
 Will print:
@@ -108,12 +108,11 @@ objects within the array, this returns a JSON array containing the results for
 each element.
 
 ``` go
-...
-
-jsonParsed, _ := gabs.ParseJSON([]byte(`{"array":[ {"value":1}, {"value":2}, {"value":3} ]}`))
+jsonParsed, err := gabs.ParseJSON([]byte(`{"array":[ {"value":1}, {"value":2}, {"value":3} ]}`))
+if err != nil {
+	panic(err)
+}
 fmt.Println(jsonParsed.Path("array.value").String())
-
-...
 ```
 
 Will print:
@@ -125,8 +124,6 @@ Will print:
 ### Generating JSON
 
 ``` go
-...
-
 jsonObj := gabs.New()
 // or gabs.Consume(jsonObject) to work on an existing map[string]interface{}
 
@@ -135,8 +132,6 @@ jsonObj.SetP(20, "outter.inner.value2")
 jsonObj.Set(30, "outter", "inner2", "value3")
 
 fmt.Println(jsonObj.String())
-
-...
 ```
 
 Will print:
@@ -148,11 +143,7 @@ Will print:
 To pretty-print:
 
 ``` go
-...
-
 fmt.Println(jsonObj.StringIndent("", "  "))
-
-...
 ```
 
 Will print:
@@ -174,8 +165,6 @@ Will print:
 ### Generating Arrays
 
 ``` go
-...
-
 jsonObj := gabs.New()
 
 jsonObj.Array("foo", "array")
@@ -186,8 +175,6 @@ jsonObj.ArrayAppend(20, "foo", "array")
 jsonObj.ArrayAppend(30, "foo", "array")
 
 fmt.Println(jsonObj.String())
-
-...
 ```
 
 Will print:
@@ -199,8 +186,6 @@ Will print:
 Working with arrays by index:
 
 ``` go
-...
-
 jsonObj := gabs.New()
 
 // Create an array with the length of 3
@@ -217,8 +202,6 @@ jsonObj.S("foo").Index(2).SetIndex(2, 1)
 jsonObj.S("foo").Index(2).SetIndex(3, 2)
 
 fmt.Println(jsonObj.String())
-
-...
 ```
 
 Will print:
@@ -232,8 +215,6 @@ Will print:
 This is the easiest part:
 
 ``` go
-...
-
 jsonParsedObj, _ := gabs.ParseJSON([]byte(`{
 	"outter":{
 		"values":{
@@ -246,15 +227,11 @@ jsonParsedObj, _ := gabs.ParseJSON([]byte(`{
 
 jsonOutput := jsonParsedObj.String()
 // Becomes `{"outter":{"values":{"first":10,"second":11}},"outter2":"hello world"}`
-
-...
 ```
 
 And to serialize a specific segment is as simple as:
 
 ``` go
-...
-
 jsonParsedObj := gabs.ParseJSON([]byte(`{
 	"outter":{
 		"values":{
@@ -267,8 +244,6 @@ jsonParsedObj := gabs.ParseJSON([]byte(`{
 
 jsonOutput := jsonParsedObj.Search("outter").String()
 // Becomes `{"values":{"first":10,"second":11}}`
-
-...
 ```
 
 ### Merge two containers
diff --git a/vendor/github.com/Jeffail/gabs/gabs.go b/vendor/github.com/Jeffail/gabs/gabs.go
index a21a79d7..011c4c39 100644
--- a/vendor/github.com/Jeffail/gabs/gabs.go
+++ b/vendor/github.com/Jeffail/gabs/gabs.go
@@ -20,58 +20,85 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 */
 
-// Package gabs implements a simplified wrapper around creating and parsing JSON.
+// Package gabs implements a simplified wrapper around creating and parsing
+// unknown or dynamic JSON.
 package gabs
 
 import (
 	"bytes"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"io"
 	"io/ioutil"
+	"strconv"
 	"strings"
 )
 
-//--------------------------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
 
 var (
-	// ErrOutOfBounds - Index out of bounds.
+	// ErrOutOfBounds indicates an index was out of bounds.
 	ErrOutOfBounds = errors.New("out of bounds")
 
-	// ErrNotObjOrArray - The target is not an object or array type.
+	// ErrNotObjOrArray is returned when a target is not an object or array type
+	// but needs to be for the intended operation.
 	ErrNotObjOrArray = errors.New("not an object or array")
 
-	// ErrNotObj - The target is not an object type.
+	// ErrNotObj is returned when a target is not an object but needs to be for
+	// the intended operation.
 	ErrNotObj = errors.New("not an object")
 
-	// ErrNotArray - The target is not an array type.
+	// ErrNotArray is returned when a target is not an array but needs to be for
+	// the intended operation.
 	ErrNotArray = errors.New("not an array")
 
-	// ErrPathCollision - Creating a path failed because an element collided with an existing value.
+	// ErrPathCollision is returned when creating a path failed because an
+	// element collided with an existing value.
 	ErrPathCollision = errors.New("encountered value collision whilst building path")
 
-	// ErrInvalidInputObj - The input value was not a map[string]interface{}.
+	// ErrInvalidInputObj is returned when the input value was not a
+	// map[string]interface{}.
 	ErrInvalidInputObj = errors.New("invalid input object")
 
-	// ErrInvalidInputText - The input data could not be parsed.
+	// ErrInvalidInputText is returned when the input data could not be parsed.
 	ErrInvalidInputText = errors.New("input text could not be parsed")
 
-	// ErrInvalidPath - The filepath was not valid.
+	// ErrInvalidPath is returned when the filepath was not valid.
 	ErrInvalidPath = errors.New("invalid file path")
 
-	// ErrInvalidBuffer - The input buffer contained an invalid JSON string
+	// ErrInvalidBuffer is returned when the input buffer contained an invalid
+	// JSON string.
 	ErrInvalidBuffer = errors.New("input buffer contained invalid JSON")
 )
 
-//--------------------------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
 
-// Container - an internal structure that holds a reference to the core interface map of the parsed
-// json. Use this container to move context.
+func resolveJSONPointerHierarchy(path string) ([]string, error) {
+	if len(path) < 1 {
+		return nil, errors.New("failed to resolve JSON pointer: path must not be empty")
+	}
+	if path[0] != '/' {
+		return nil, errors.New("failed to resolve JSON pointer: path must begin with '/'")
+	}
+	hierarchy := strings.Split(path, "/")[1:]
+	for i, v := range hierarchy {
+		v = strings.Replace(v, "~1", "/", -1)
+		v = strings.Replace(v, "~0", "~", -1)
+		hierarchy[i] = v
+	}
+	return hierarchy, nil
+}
+
+//------------------------------------------------------------------------------
+
+// Container references a specific element within a JSON structure.
 type Container struct {
 	object interface{}
 }
 
-// Data - Return the contained data as an interface{}.
+// Data returns the underlying interface{} of the target element in the JSON
+// structure.
 func (g *Container) Data() interface{} {
 	if g == nil {
 		return nil
@@ -79,17 +106,18 @@ func (g *Container) Data() interface{} {
 	return g.object
 }
 
-//--------------------------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
 
-// Path - Search for a value using dot notation.
+// Path searches the JSON structure following a path in dot notation.
 func (g *Container) Path(path string) *Container {
 	return g.Search(strings.Split(path, ".")...)
 }
 
-// Search - Attempt to find and return an object within the JSON structure by specifying the
-// hierarchy of field names to locate the target. If the search encounters an array and has not
-// reached the end target then it will iterate each object of the array for the target and return
-// all of the results in a JSON array.
+// Search attempts to find and return an object within the JSON structure by
+// following a provided hierarchy of field names to locate the target. If the
+// search encounters an array and has not reached the end target then it will
+// iterate each object of the array for the target and return all of the results
+// in a JSON array.
 func (g *Container) Search(hierarchy ...string) *Container {
 	var object interface{}
 
@@ -120,22 +148,55 @@ func (g *Container) Search(hierarchy ...string) *Container {
 	return &Container{object}
 }
 
-// S - Shorthand method, does the same thing as Search.
+// JSONPointer parses a JSON pointer path (https://tools.ietf.org/html/rfc6901)
+// and either returns a *gabs.Container containing the result or an error if the
+// referenced item could not be found.
+func (g *Container) JSONPointer(path string) (*Container, error) {
+	hierarchy, err := resolveJSONPointerHierarchy(path)
+	if err != nil {
+		return nil, err
+	}
+
+	object := g.Data()
+	for target := 0; target < len(hierarchy); target++ {
+		pathSeg := hierarchy[target]
+		if mmap, ok := object.(map[string]interface{}); ok {
+			object, ok = mmap[pathSeg]
+			if !ok {
+				return nil, fmt.Errorf("failed to resolve JSON pointer: index '%v' value '%v' was not found", target, pathSeg)
+			}
+		} else if marray, ok := object.([]interface{}); ok {
+			index, err := strconv.Atoi(pathSeg)
+			if err != nil {
+				return nil, fmt.Errorf("failed to resolve JSON pointer: could not parse index '%v' value '%v' into array index: %v", target, pathSeg, err)
+			}
+			if len(marray) <= index {
+				return nil, fmt.Errorf("failed to resolve JSON pointer: index '%v' value '%v' exceeded target array size of '%v'", target, pathSeg, len(marray))
+			}
+			object = marray[index]
+		} else {
+			return &Container{nil}, fmt.Errorf("failed to resolve JSON pointer: index '%v' field '%v' was not found", target, pathSeg)
+		}
+	}
+	return &Container{object}, nil
+}
+
+// S is a shorthand alias for Search.
 func (g *Container) S(hierarchy ...string) *Container {
 	return g.Search(hierarchy...)
 }
 
-// Exists - Checks whether a path exists.
+// Exists checks whether a path exists.
 func (g *Container) Exists(hierarchy ...string) bool {
 	return g.Search(hierarchy...) != nil
 }
 
-// ExistsP - Checks whether a dot notation path exists.
+// ExistsP checks whether a dot notation path exists.
 func (g *Container) ExistsP(path string) bool {
 	return g.Exists(strings.Split(path, ".")...)
 }
 
-// Index - Attempt to find and return an object within a JSON array by index.
+// Index attempts to find and return an element within a JSON array by an index.
 func (g *Container) Index(index int) *Container {
 	if array, ok := g.Data().([]interface{}); ok {
 		if index >= len(array) {
@@ -146,9 +207,9 @@ func (g *Container) Index(index int) *Container {
 	return &Container{nil}
 }
 
-// Children - Return a slice of all the children of the array. This also works for objects, however,
-// the children returned for an object will NOT be in order and you lose the names of the returned
-// objects this way.
+// Children returns a slice of all children of an array element. This also works
+// for objects, however, the children returned for an object will be in a random
+// order and you lose the names of the returned objects this way.
 func (g *Container) Children() ([]*Container, error) {
 	if array, ok := g.Data().([]interface{}); ok {
 		children := make([]*Container, len(array))
@@ -167,7 +228,7 @@ func (g *Container) Children() ([]*Container, error) {
 	return nil, ErrNotObjOrArray
 }
 
-// ChildrenMap - Return a map of all the children of an object.
+// ChildrenMap returns a map of all the children of an object element.
 func (g *Container) ChildrenMap() (map[string]*Container, error) {
 	if mmap, ok := g.Data().(map[string]interface{}); ok {
 		children := map[string]*Container{}
@@ -179,11 +240,11 @@ func (g *Container) ChildrenMap() (map[string]*Container, error) {
 	return nil, ErrNotObj
 }
 
-//--------------------------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
 
-// Set - Set the value of a field at a JSON path, any parts of the path that do not exist will be
-// constructed, and if a collision occurs with a non object type whilst iterating the path an error
-// is returned.
+// Set the value of a field at a JSON path, any parts of the path that do not
+// exist will be constructed, and if a collision occurs with a non object type
+// whilst iterating the path an error is returned.
 func (g *Container) Set(value interface{}, path ...string) (*Container, error) {
 	if len(path) == 0 {
 		g.object = value
@@ -209,12 +270,14 @@ func (g *Container) Set(value interface{}, path ...string) (*Container, error) {
 	return &Container{object}, nil
 }
 
-// SetP - Does the same as Set, but using a dot notation JSON path.
+// SetP sets the value of a field at a JSON path using dot notation, any parts
+// of the path that do not exist will be constructed, and if a collision occurs
+// with a non object type whilst iterating the path an error is returned.
 func (g *Container) SetP(value interface{}, path string) (*Container, error) {
 	return g.Set(value, strings.Split(path, ".")...)
 }
 
-// SetIndex - Set a value of an array element based on the index.
+// SetIndex attempts to set a value of an array element based on an index.
 func (g *Container) SetIndex(value interface{}, index int) (*Container, error) {
 	if array, ok := g.Data().([]interface{}); ok {
 		if index >= len(array) {
@@ -226,60 +289,112 @@ func (g *Container) SetIndex(value interface{}, index int) (*Container, error) {
 	return &Container{nil}, ErrNotArray
 }
 
-// Object - Create a new JSON object at a path. Returns an error if the path contains a collision
-// with a non object type.
+// SetJSONPointer parses a JSON pointer path
+// (https://tools.ietf.org/html/rfc6901) and sets the leaf to a value. Returns
+// an error if the pointer could not be resolved due to missing fields.
+func (g *Container) SetJSONPointer(value interface{}, path string) error {
+	hierarchy, err := resolveJSONPointerHierarchy(path)
+	if err != nil {
+		return err
+	}
+
+	if len(hierarchy) == 0 {
+		g.object = value
+		return nil
+	}
+
+	object := g.object
+
+	for target := 0; target < len(hierarchy); target++ {
+		pathSeg := hierarchy[target]
+		if mmap, ok := object.(map[string]interface{}); ok {
+			if target == len(hierarchy)-1 {
+				object = value
+				mmap[pathSeg] = object
+			} else if object = mmap[pathSeg]; object == nil {
+				return fmt.Errorf("failed to resolve JSON pointer: index '%v' value '%v' was not found", target, pathSeg)
+			}
+		} else if marray, ok := object.([]interface{}); ok {
+			index, err := strconv.Atoi(pathSeg)
+			if err != nil {
+				return fmt.Errorf("failed to resolve JSON pointer: could not parse index '%v' value '%v' into array index: %v", target, pathSeg, err)
+			}
+			if len(marray) <= index {
+				return fmt.Errorf("failed to resolve JSON pointer: index '%v' value '%v' exceeded target array size of '%v'", target, pathSeg, len(marray))
+			}
+			if target == len(hierarchy)-1 {
+				object = value
+				marray[index] = object
+			} else if object = marray[index]; object == nil {
+				return fmt.Errorf("failed to resolve JSON pointer: index '%v' value '%v' was not found", target, pathSeg)
+			}
+		} else {
+			return fmt.Errorf("failed to resolve JSON pointer: index '%v' value '%v' was not found", target, pathSeg)
+		}
+	}
+	return nil
+}
+
+// Object creates a new JSON object at a target path. Returns an error if the
+// path contains a collision with a non object type.
 func (g *Container) Object(path ...string) (*Container, error) {
 	return g.Set(map[string]interface{}{}, path...)
 }
 
-// ObjectP - Does the same as Object, but using a dot notation JSON path.
+// ObjectP creates a new JSON object at a target path using dot notation.
+// Returns an error if the path contains a collision with a non object type.
 func (g *Container) ObjectP(path string) (*Container, error) {
 	return g.Object(strings.Split(path, ".")...)
 }
 
-// ObjectI - Create a new JSON object at an array index. Returns an error if the object is not an
-// array or the index is out of bounds.
+// ObjectI creates a new JSON object at an array index. Returns an error if the
+// object is not an array or the index is out of bounds.
 func (g *Container) ObjectI(index int) (*Container, error) {
 	return g.SetIndex(map[string]interface{}{}, index)
 }
 
-// Array - Create a new JSON array at a path. Returns an error if the path contains a collision with
-// a non object type.
+// Array creates a new JSON array at a path. Returns an error if the path
+// contains a collision with a non object type.
 func (g *Container) Array(path ...string) (*Container, error) {
 	return g.Set([]interface{}{}, path...)
 }
 
-// ArrayP - Does the same as Array, but using a dot notation JSON path.
+// ArrayP creates a new JSON array at a path using dot notation. Returns an
+// error if the path contains a collision with a non object type.
 func (g *Container) ArrayP(path string) (*Container, error) {
 	return g.Array(strings.Split(path, ".")...)
 }
 
-// ArrayI - Create a new JSON array at an array index. Returns an error if the object is not an
-// array or the index is out of bounds.
+// ArrayI creates a new JSON array within an array at an index. Returns an error
+// if the element is not an array or the index is out of bounds.
 func (g *Container) ArrayI(index int) (*Container, error) {
 	return g.SetIndex([]interface{}{}, index)
 }
 
-// ArrayOfSize - Create a new JSON array of a particular size at a path. Returns an error if the
-// path contains a collision with a non object type.
+// ArrayOfSize creates a new JSON array of a particular size at a path. Returns
+// an error if the path contains a collision with a non object type.
 func (g *Container) ArrayOfSize(size int, path ...string) (*Container, error) {
 	a := make([]interface{}, size)
 	return g.Set(a, path...)
 }
 
-// ArrayOfSizeP - Does the same as ArrayOfSize, but using a dot notation JSON path.
+// ArrayOfSizeP creates a new JSON array of a particular size at a path using
+// dot notation. Returns an error if the path contains a collision with a non
+// object type.
 func (g *Container) ArrayOfSizeP(size int, path string) (*Container, error) {
 	return g.ArrayOfSize(size, strings.Split(path, ".")...)
 }
 
-// ArrayOfSizeI - Create a new JSON array of a particular size at an array index. Returns an error
-// if the object is not an array or the index is out of bounds.
+// ArrayOfSizeI create a new JSON array of a particular size within an array at
+// an index. Returns an error if the element is not an array or the index is out
+// of bounds.
 func (g *Container) ArrayOfSizeI(size, index int) (*Container, error) {
 	a := make([]interface{}, size)
 	return g.SetIndex(a, index)
 }
 
-// Delete - Delete an element at a JSON path, an error is returned if the element does not exist.
+// Delete an element at a path, an error is returned if the element does not
+// exist.
 func (g *Container) Delete(path ...string) error {
 	var object interface{}
 
@@ -304,45 +419,40 @@ func (g *Container) Delete(path ...string) error {
 	return nil
 }
 
-// DeleteP - Does the same as Delete, but using a dot notation JSON path.
+// DeleteP deletes an element at a path using dot notation, an error is returned
+// if the element does not exist.
 func (g *Container) DeleteP(path string) error {
 	return g.Delete(strings.Split(path, ".")...)
 }
 
-// Merge - Merges two gabs-containers
-func (g *Container) Merge(toMerge *Container) error {
+// MergeFn merges two objects using a provided function to resolve collisions.
+//
+// The collision function receives two interface{} arguments, destination (the
+// original object) and source (the object being merged into the destination).
+// Which ever value is returned becomes the new value in the destination object
+// at the location of the collision.
+func (g *Container) MergeFn(source *Container, collisionFn func(destination, source interface{}) interface{}) error {
 	var recursiveFnc func(map[string]interface{}, []string) error
 	recursiveFnc = func(mmap map[string]interface{}, path []string) error {
 		for key, value := range mmap {
 			newPath := append(path, key)
 			if g.Exists(newPath...) {
-				target := g.Search(newPath...)
+				existingData := g.Search(newPath...).Data()
 				switch t := value.(type) {
 				case map[string]interface{}:
-					switch targetV := target.Data().(type) {
+					switch existingVal := existingData.(type) {
 					case map[string]interface{}:
 						if err := recursiveFnc(t, newPath); err != nil {
 							return err
 						}
-					case []interface{}:
-						g.Set(append(targetV, t), newPath...)
 					default:
-						newSlice := append([]interface{}{}, targetV)
-						g.Set(append(newSlice, t), newPath...)
-					}
-				case []interface{}:
-					for _, valueOfSlice := range t {
-						if err := g.ArrayAppend(valueOfSlice, newPath...); err != nil {
+						if _, err := g.Set(collisionFn(existingVal, t), newPath...); err != nil {
 							return err
 						}
 					}
 				default:
-					switch targetV := target.Data().(type) {
-					case []interface{}:
-						g.Set(append(targetV, t), newPath...)
-					default:
-						newSlice := append([]interface{}{}, targetV)
-						g.Set(append(newSlice, t), newPath...)
+					if _, err := g.Set(collisionFn(existingData, t), newPath...); err != nil {
+						return err
 					}
 				}
 			} else {
@@ -354,21 +464,48 @@ func (g *Container) Merge(toMerge *Container) error {
 		}
 		return nil
 	}
-	if mmap, ok := toMerge.Data().(map[string]interface{}); ok {
+	if mmap, ok := source.Data().(map[string]interface{}); ok {
 		return recursiveFnc(mmap, []string{})
 	}
 	return nil
 }
 
-//--------------------------------------------------------------------------------------------------
+// Merge a source object into an existing destination object. When a collision
+// is found within the merged structures (both a source and destination object
+// contain the same non-object keys) the result will be an array containing both
+// values, where values that are already arrays will be expanded into the
+// resulting array.
+//
+// It is possible to merge structures will different collision behaviours with
+// MergeFn.
+func (g *Container) Merge(source *Container) error {
+	return g.MergeFn(source, func(dest, source interface{}) interface{} {
+		destArr, destIsArray := dest.([]interface{})
+		sourceArr, sourceIsArray := source.([]interface{})
+		if destIsArray {
+			if sourceIsArray {
+				return append(destArr, sourceArr...)
+			}
+			return append(destArr, source)
+		}
+		if sourceIsArray {
+			return append(append([]interface{}{}, dest), sourceArr...)
+		}
+		return []interface{}{dest, source}
+	})
+}
+
+//------------------------------------------------------------------------------
 
 /*
-Array modification/search - Keeping these options simple right now, no need for anything more
-complicated since you can just cast to []interface{}, modify and then reassign with Set.
+Array modification/search - Keeping these options simple right now, no need for
+anything more complicated since you can just cast to []interface{}, modify and
+then reassign with Set.
 */
 
-// ArrayAppend - Append a value onto a JSON array. If the target is not a JSON array then it will be
-// converted into one, with its contents as the first element of the array.
+// ArrayAppend attempts to append a value onto a JSON array at a path. If the
+// target is not a JSON array then it will be converted into one, with its
+// original contents set to the first element of the array.
 func (g *Container) ArrayAppend(value interface{}, path ...string) error {
 	if array, ok := g.Search(path...).Data().([]interface{}); ok {
 		array = append(array, value)
@@ -386,12 +523,15 @@ func (g *Container) ArrayAppend(value interface{}, path ...string) error {
 	return err
 }
 
-// ArrayAppendP - Append a value onto a JSON array using a dot notation JSON path.
+// ArrayAppendP attempts to append a value onto a JSON array at a path using dot
+// notation. If the target is not a JSON array then it will be converted into
+// one, with its original contents set to the first element of the array.
 func (g *Container) ArrayAppendP(value interface{}, path string) error {
 	return g.ArrayAppend(value, strings.Split(path, ".")...)
 }
 
-// ArrayRemove - Remove an element from a JSON array.
+// ArrayRemove attempts to remove an element identified by an index from a JSON
+// array at a path.
 func (g *Container) ArrayRemove(index int, path ...string) error {
 	if index < 0 {
 		return ErrOutOfBounds
@@ -409,12 +549,14 @@ func (g *Container) ArrayRemove(index int, path ...string) error {
 	return err
 }
 
-// ArrayRemoveP - Remove an element from a JSON array using a dot notation JSON path.
+// ArrayRemoveP attempts to remove an element identified by an index from a JSON
+// array at a path using dot notation.
 func (g *Container) ArrayRemoveP(index int, path string) error {
 	return g.ArrayRemove(index, strings.Split(path, ".")...)
 }
 
-// ArrayElement - Access an element from a JSON array.
+// ArrayElement attempts to access an element by an index from a JSON array at a
+// path.
 func (g *Container) ArrayElement(index int, path ...string) (*Container, error) {
 	if index < 0 {
 		return &Container{nil}, ErrOutOfBounds
@@ -429,12 +571,13 @@ func (g *Container) ArrayElement(index int, path ...string) (*Container, error)
 	return &Container{nil}, ErrOutOfBounds
 }
 
-// ArrayElementP - Access an element from a JSON array using a dot notation JSON path.
+// ArrayElementP attempts to access an element by an index from a JSON array at
+// a path using dot notation.
 func (g *Container) ArrayElementP(index int, path string) (*Container, error) {
 	return g.ArrayElement(index, strings.Split(path, ".")...)
 }
 
-// ArrayCount - Count the number of elements in a JSON array.
+// ArrayCount counts the number of elements in a JSON array at a path.
 func (g *Container) ArrayCount(path ...string) (int, error) {
 	if array, ok := g.Search(path...).Data().([]interface{}); ok {
 		return len(array), nil
@@ -442,14 +585,15 @@ func (g *Container) ArrayCount(path ...string) (int, error) {
 	return 0, ErrNotArray
 }
 
-// ArrayCountP - Count the number of elements in a JSON array using a dot notation JSON path.
+// ArrayCountP counts the number of elements in a JSON array at a path using dot
+// notation.
 func (g *Container) ArrayCountP(path string) (int, error) {
 	return g.ArrayCount(strings.Split(path, ".")...)
 }
 
-//--------------------------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
 
-// Bytes - Converts the contained object back to a JSON []byte blob.
+// Bytes marshals an element to a JSON []byte blob.
 func (g *Container) Bytes() []byte {
 	if g.Data() != nil {
 		if bytes, err := json.Marshal(g.object); err == nil {
@@ -459,7 +603,8 @@ func (g *Container) Bytes() []byte {
 	return []byte("{}")
 }
 
-// BytesIndent - Converts the contained object to a JSON []byte blob formatted with prefix, indent.
+// BytesIndent marshals an element to a JSON []byte blob formatted with a prefix
+// and indent string.
 func (g *Container) BytesIndent(prefix string, indent string) []byte {
 	if g.object != nil {
 		if bytes, err := json.MarshalIndent(g.object, prefix, indent); err == nil {
@@ -469,12 +614,13 @@ func (g *Container) BytesIndent(prefix string, indent string) []byte {
 	return []byte("{}")
 }
 
-// String - Converts the contained object to a JSON formatted string.
+// String marshals an element to a JSON formatted string.
 func (g *Container) String() string {
 	return string(g.Bytes())
 }
 
-// StringIndent - Converts the contained object back to a JSON formatted string with prefix, indent.
+// StringIndent marshals an element to a JSON string formatted with a prefix and
+// indent string.
 func (g *Container) StringIndent(prefix string, indent string) string {
 	return string(g.BytesIndent(prefix, indent))
 }
@@ -496,10 +642,9 @@ func EncodeOptIndent(prefix string, indent string) EncodeOpt {
 	}
 }
 
-// EncodeJSON - Encodes the contained object back to a JSON formatted []byte
-// using a variant list of modifier functions for the encoder being used.
-// Functions for modifying the output are prefixed with EncodeOpt, e.g.
-// EncodeOptHTMLEscape.
+// EncodeJSON marshals an element to a JSON formatted []byte using a variant
+// list of modifier functions for the encoder being used. Functions for
+// modifying the output are prefixed with EncodeOpt, e.g. EncodeOptHTMLEscape.
 func (g *Container) EncodeJSON(encodeOpts ...EncodeOpt) []byte {
 	var b bytes.Buffer
 	encoder := json.NewEncoder(&b)
@@ -517,17 +662,18 @@ func (g *Container) EncodeJSON(encodeOpts ...EncodeOpt) []byte {
 	return result
 }
 
-// New - Create a new gabs JSON object.
+// New creates a new gabs JSON object.
 func New() *Container {
 	return &Container{map[string]interface{}{}}
 }
 
-// Consume - Gobble up an already converted JSON object, or a fresh map[string]interface{} object.
+// Consume an already unmarshalled JSON object (or a new map[string]interface{})
+// into a *Container.
 func Consume(root interface{}) (*Container, error) {
 	return &Container{root}, nil
 }
 
-// ParseJSON - Convert a string into a representation of the parsed JSON.
+// ParseJSON unmarshals a JSON byte slice into a *Container.
 func ParseJSON(sample []byte) (*Container, error) {
 	var gabs Container
 
@@ -538,7 +684,7 @@ func ParseJSON(sample []byte) (*Container, error) {
 	return &gabs, nil
 }
 
-// ParseJSONDecoder - Convert a json.Decoder into a representation of the parsed JSON.
+// ParseJSONDecoder applies a json.Decoder to a *Container.
 func ParseJSONDecoder(decoder *json.Decoder) (*Container, error) {
 	var gabs Container
 
@@ -549,7 +695,7 @@ func ParseJSONDecoder(decoder *json.Decoder) (*Container, error) {
 	return &gabs, nil
 }
 
-// ParseJSONFile - Read a file and convert into a representation of the parsed JSON.
+// ParseJSONFile reads a file and unmarshals the contents into a *Container.
 func ParseJSONFile(path string) (*Container, error) {
 	if len(path) > 0 {
 		cBytes, err := ioutil.ReadFile(path)
@@ -567,7 +713,7 @@ func ParseJSONFile(path string) (*Container, error) {
 	return nil, ErrInvalidPath
 }
 
-// ParseJSONBuffer - Read the contents of a buffer into a representation of the parsed JSON.
+// ParseJSONBuffer reads a buffer and unmarshals the contents into a *Container.
 func ParseJSONBuffer(buffer io.Reader) (*Container, error) {
 	var gabs Container
 	jsonDecoder := json.NewDecoder(buffer)
@@ -578,4 +724,4 @@ func ParseJSONBuffer(buffer io.Reader) (*Container, error) {
 	return &gabs, nil
 }
 
-//--------------------------------------------------------------------------------------------------
+//------------------------------------------------------------------------------
diff --git a/vendor/github.com/Jeffail/gabs/go.mod b/vendor/github.com/Jeffail/gabs/go.mod
new file mode 100644
index 00000000..ff2fc976
--- /dev/null
+++ b/vendor/github.com/Jeffail/gabs/go.mod
@@ -0,0 +1 @@
+module github.com/Jeffail/gabs