Rename TomlTree to Tree (#159)

Avoid stutter.

Fixes #55

cmd/test_program.go

@@ -41,16 +41,16 @@ func translate(tomlData interface{}) interface{} {
 			typed[k] = translate(v)
 		}
 		return typed
-	case *toml.TomlTree:
+	case *toml.Tree:
 		return translate(*orig)
-	case toml.TomlTree:
+	case toml.Tree:
 		keys := orig.Keys()
 		typed := make(map[string]interface{}, len(keys))
 		for _, k := range keys {
 			typed[k] = translate(orig.GetPath([]string{k}))
 		}
 		return typed
-	case []*toml.TomlTree:
+	case []*toml.Tree:
 		typed := make([]map[string]interface{}, len(orig))
 		for i, v := range orig {
 			typed[i] = translate(v).(map[string]interface{})

cmd/tomljson/main.go

@@ -57,7 +57,7 @@ func reader(r io.Reader) (string, error) {
 	return mapToJSON(tree)
 }
 
-func mapToJSON(tree *toml.TomlTree) (string, error) {
+func mapToJSON(tree *toml.Tree) (string, error) {
 	treeMap := tree.ToMap()
 	bytes, err := json.MarshalIndent(treeMap, "", "  ")
 	if err != nil {