Ignore partial helper error
Simplify render function
Format helper
CSS/JS helper: Add "/"  before path. Add ".css/.js" after path.
Date helper
Form helper
Conditional helper
Link helper
List helper
Number helper
Config default values
Add helpers
Prevent default config changed
Render pullquote content with markdown
Prevent layout variable changed
Variable cache
Merge branch 'helper' into dev
YFM: render yaml via render API
Update version number in package.json when init
Render API: Add isRenderable, isRenderableSync, getOutput