Merge branch 'release/0.4.0'

.babelrc

@@ -1,9 +1,3 @@
 {
-  "presets": ["env"],
-  "plugins": [
-    "add-module-exports",
-    ["transform-es2015-classes", {"loose": true}],
-    "transform-object-rest-spread",
-    "transform-runtime"
-  ]
+  "presets": [["@babel/preset-env", { "modules": false }]]
 }

bump

@@ -11,8 +11,7 @@ update_dependencies() {
 update_version() {
   current_tag=$(git describe --abbrev=0 --tags master) &&
   echo 'bump from '$current_tag' to '$1 &&
-  sed -i ".bkp" "s/\(version\":[ ]*\"\)$current_tag/\1$1/" package.json &&
-  sed -i ".bkp" "s/\(version\":[ ]*\"\)$current_tag/\1$1/" yuidoc.json
+  sed -i ".bkp" "s/\(version\":[ ]*\"\)$current_tag/\1$1/" package.json
 }
 
 build() {
@@ -28,7 +27,7 @@ run_tests() {
 }
 
 make_release_commit() {
-  git add package.json yarn.lock yuidoc.json dist &&
+  git add package.json yarn.lock dist &&
   git commit -m 'chore(package): bump to '$1 &&
   git flow release finish $1
 }