added initial implementations of VRSelector and VRCamera

updated some tests and examples

updated AR examples

properties for new version

some fixes of loop handing in GL renderers

some fixes of loop handing in GL renderers

makes more sense if restoredSurface is true

com.google.android.wearable:wearable dependency should be compileOnly

removed duplicated line

made wearLowBit and wearBurnIn public