Fix for basic square chat bubble to take account of system scale
Light Room Effect

Bulbs can light rooms. Ghosts react to lit rooms (Red ghost doesn't
react yet)
Particle system

Green ghost death and blue ghost pause particles.
Refactored Chatbubble

Can accept Entity or name to track.
Callbacks when bubble is over.
Note: still has inefficient name lookup during update/draw to retain
API (is can change name of tracked object without calling any update
method).
Added button plugin

And used for twitter… but of course it gets blocked. But we have
buttons now.
Fixed double sparebar press between levels
Blue ghosts struggles when trapped in light.
Better levels & red ghost.

Tets level per ghost, plus added red ghost that runs away in light.
Added basic death system
Yellow ghost & fixed player dying.

Player death name doesn't clash with ghost death...
Updated to latest chatbubble
Climbing not jumping.

Includes falling death.