Disalbe auto code completion even there's only one option
Hide auto-completion if only one completion option and it's been typed
Support use tab key to accept code completion option
-Detect when free() might crash the project and throw error
-fixed 2D Bounce in physics (3d still broken)
-renamed “on_top” property to “behind_parent”, which makes more sense, old on_top remains there for compatibility but is invisible.
-large amount of fixes