Added check to prevent removing assets that were loaded by other screens
Merge pull request #34 from peakgames/alreadyLoadedAsset

Added check to prevent removing assets that were loaded by other screens
Added asynchronous build of external groups
Merge branch 'develop' into buildGroupAsync
Implemented changes about comments
Merge pull request #35 from peakgames/buildGroupAsync

Build group async
Merge branch 'develop' into listview