fixed KeyboardZone's keys being draggable
minor changes to swipe keyboard tutorial
removed explicit call from Zone.hashCode ( wasn't needed )
setVisible now also toggles picking. set*ble now also affect children
updated keyboard tutorial sketch
added ViewportZone.resetView(). minor formatting changes to Zone
switched to creating a nice node-graph demo for the viewports tutorial.
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