phase 2: mattes/migrate -> migratex (#848)

* move mattes migrations to migratex

* changes format of migrations to migratex format
* updates test runner to use new interface (double checked this with printlns,
the tests go fully down and then up, and work on pg/mysql)

* remove mattes/migrate

* update tests from deps

* update readme

* fix other file extensions

vendor/github.com/go-openapi/swag/json.go

@@ -96,8 +96,7 @@ func ConcatJSON(blobs ...[]byte) []byte {
 
 	last := len(blobs) - 1
 	var opening, closing byte
-	a := 0
-	idx := 0
+	var idx, a int
 	buf := bytes.NewBuffer(nil)
 
 	for i, b := range blobs {

vendor/github.com/go-openapi/swag/loading.go

@@ -19,7 +19,6 @@ import (
 	"io/ioutil"
 	"log"
 	"net/http"
-	"net/url"
 	"path/filepath"
 	"strings"
 	"time"
@@ -45,7 +44,10 @@ func LoadStrategy(path string, local, remote func(string) ([]byte, error)) func(
 		return remote
 	}
 	return func(pth string) ([]byte, error) {
-		upth, _ := url.PathUnescape(pth)
+		upth, err := pathUnescape(pth)
+		if err != nil {
+			return nil, err
+		}
 		return local(filepath.FromSlash(upth))
 	}
 }

vendor/github.com/go-openapi/swag/post_go18.go

@@ -0,0 +1,9 @@
+// +build go1.8
+
+package swag
+
+import "net/url"
+
+func pathUnescape(path string) (string, error) {
+	return url.PathUnescape(path)
+}

vendor/github.com/go-openapi/swag/pre_go18.go

@@ -0,0 +1,9 @@
+// +build !go1.8
+
+package swag
+
+import "net/url"
+
+func pathUnescape(path string) (string, error) {
+	return url.QueryUnescape(path)
+}

vendor/github.com/go-openapi/swag/yaml.go

@@ -42,6 +42,7 @@ func YAMLToJSON(data interface{}) (json.RawMessage, error) {
 	return json.RawMessage(b), err
 }
 
+// BytesToYAMLDoc converts a byte slice into a YAML document
 func BytesToYAMLDoc(data []byte) (interface{}, error) {
 	var canary map[interface{}]interface{} // validate this is an object and not a different type
 	if err := yaml.Unmarshal(data, &canary); err != nil {