fixed removal from ViewportZone not working
finished nodes demo
small changes to nodes demo
setVisible no longer also toggles picking
minor fix to SwipeKeyboard
added SwipeKeyboard.setAnchorsEnabled( boolean) and .getAnchorsEnabled()
moved keyboard tutorial
moved contributing guide
finished the contributing guide
added some notes on releasing new versions of SMT
minor fix to make package
added some variables and functions for tracking SMT versions