Fix the dependency issue (#231)

vendor/github.com/spf13/cast/.gitignore

@@ -1,25 +0,0 @@
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-
-# Folders
-_obj
-_test
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-*.exe
-*.test
-
-*.bench

vendor/github.com/spf13/cast/.travis.yml

@@ -1,14 +0,0 @@
-language: go
-sudo: required
-go:
-  - 1.7.5
-  - 1.8
-  - tip
-os:
-  - linux
-matrix:
-  allow_failures:
-    - go: tip
-  fast_finish: true
-script:
-  - make check

vendor/github.com/spf13/cast/Makefile

@@ -1,38 +0,0 @@
-# A Self-Documenting Makefile: http://marmelab.com/blog/2016/02/29/auto-documented-makefile.html
-
-.PHONY: check fmt lint test test-race vet test-cover-html help
-.DEFAULT_GOAL := help
-
-check: test-race fmt vet lint ## Run tests and linters
-
-test: ## Run tests
-	go test ./...
-
-test-race: ## Run tests with race detector
-	go test -race ./...
-
-fmt: ## Run gofmt linter
-	@for d in `go list` ; do \
-		if [ "`gofmt -l -s $$GOPATH/src/$$d | tee /dev/stderr`" ]; then \
-			echo "^ improperly formatted go files" && echo && exit 1; \
-		fi \
-	done
-
-lint: ## Run golint linter
-	@for d in `go list` ; do \
-		if [ "`golint $$d | tee /dev/stderr`" ]; then \
-			echo "^ golint errors!" && echo && exit 1; \
-		fi \
-	done
-
-vet: ## Run go vet linter
-	@if [ "`go vet | tee /dev/stderr`" ]; then \
-		echo "^ go vet errors!" && echo && exit 1; \
-	fi
-
-test-cover-html: ## Generate test coverage report
-	go test -coverprofile=coverage.out -covermode=count
-	go tool cover -func=coverage.out
-
-help:
-	@grep -E '^[a-zA-Z0-9_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

vendor/github.com/spf13/cast/README.md

@@ -1,75 +0,0 @@
-cast
-====
-[![GoDoc](https://godoc.org/github.com/spf13/cast?status.svg)](https://godoc.org/github.com/spf13/cast)
-[![Build Status](https://api.travis-ci.org/spf13/cast.svg?branch=master)](https://travis-ci.org/spf13/cast)
-[![Go Report Card](https://goreportcard.com/badge/github.com/spf13/cast)](https://goreportcard.com/report/github.com/spf13/cast)
-
-Easy and safe casting from one type to another in Go
-
-Don’t Panic! ... Cast
-
-## What is Cast?
-
-Cast is a library to convert between different go types in a consistent and easy way.
-
-Cast provides simple functions to easily convert a number to a string, an
-interface into a bool, etc. Cast does this intelligently when an obvious
-conversion is possible. It doesn’t make any attempts to guess what you meant,
-for example you can only convert a string to an int when it is a string
-representation of an int such as “8”. Cast was developed for use in
-[Hugo](http://hugo.spf13.com), a website engine which uses YAML, TOML or JSON
-for meta data.
-
-## Why use Cast?
-
-When working with dynamic data in Go you often need to cast or convert the data
-from one type into another. Cast goes beyond just using type assertion (though
-it uses that when possible) to provide a very straightforward and convenient
-library.
-
-If you are working with interfaces to handle things like dynamic content
-you’ll need an easy way to convert an interface into a given type. This
-is the library for you.
-
-If you are taking in data from YAML, TOML or JSON or other formats which lack
-full types, then Cast is the library for you.
-
-## Usage
-
-Cast provides a handful of To_____ methods. These methods will always return
-the desired type. **If input is provided that will not convert to that type, the
-0 or nil value for that type will be returned**.
-
-Cast also provides identical methods To_____E. These return the same result as
-the To_____ methods, plus an additional error which tells you if it successfully
-converted. Using these methods you can tell the difference between when the
-input matched the zero value or when the conversion failed and the zero value
-was returned.
-
-The following examples are merely a sample of what is available. Please review
-the code for a complete set.
-
-### Example ‘ToString’:
-
-    cast.ToString("mayonegg")         // "mayonegg"
-    cast.ToString(8)                  // "8"
-    cast.ToString(8.31)               // "8.31"
-    cast.ToString([]byte("one time")) // "one time"
-    cast.ToString(nil)                // ""
-
-	var foo interface{} = "one more time"
-    cast.ToString(foo)                // "one more time"
-
-
-### Example ‘ToInt’:
-
-    cast.ToInt(8)                  // 8
-    cast.ToInt(8.31)               // 8
-    cast.ToInt("8")                // 8
-    cast.ToInt(true)               // 1
-    cast.ToInt(false)              // 0
-
-	var eight interface{} = 8
-    cast.ToInt(eight)              // 8
-    cast.ToInt(nil)                // 0
-

vendor/github.com/spf13/cast/caste.go

@@ -6,6 +6,7 @@
 package cast
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	"html/template"
@@ -872,6 +873,9 @@ func ToStringMapStringE(i interface{}) (map[string]string, error) {
 			m[ToString(k)] = ToString(val)
 		}
 		return m, nil
+	case string:
+		err := jsonStringToObject(v, &m)
+		return m, err
 	default:
 		return m, fmt.Errorf("unable to cast %#v of type %T to map[string]string", i, i)
 	}
@@ -932,6 +936,9 @@ func ToStringMapStringSliceE(i interface{}) (map[string][]string, error) {
 			}
 			m[key] = value
 		}
+	case string:
+		err := jsonStringToObject(v, &m)
+		return m, err
 	default:
 		return m, fmt.Errorf("unable to cast %#v of type %T to map[string][]string", i, i)
 	}
@@ -955,6 +962,9 @@ func ToStringMapBoolE(i interface{}) (map[string]bool, error) {
 		return m, nil
 	case map[string]bool:
 		return v, nil
+	case string:
+		err := jsonStringToObject(v, &m)
+		return m, err
 	default:
 		return m, fmt.Errorf("unable to cast %#v of type %T to map[string]bool", i, i)
 	}
@@ -972,6 +982,9 @@ func ToStringMapE(i interface{}) (map[string]interface{}, error) {
 		return m, nil
 	case map[string]interface{}:
 		return v, nil
+	case string:
+		err := jsonStringToObject(v, &m)
+		return m, err
 	default:
 		return m, fmt.Errorf("unable to cast %#v of type %T to map[string]interface{}", i, i)
 	}
@@ -1144,3 +1157,10 @@ func parseDateWith(s string, dates []string) (d time.Time, e error) {
 	}
 	return d, fmt.Errorf("unable to parse date: %s", s)
 }
+
+// jsonStringToObject attempts to unmarshall a string as JSON into
+// the object passed as pointer.
+func jsonStringToObject(s string, v interface{}) error {
+	data := []byte(s)
+	return json.Unmarshal(data, v)
+}