update favicon (& co)
add tests/screen_transition
test font SciFly
use SciFly in index.html
update gui.svg (color, font)
launch 3d on start (to cont.)
do manual call to renderer.clear()
update icon.svg
failed to try code to force 30FPS
event: recycle Tick event instance (optim GC)
event: add options to SpawnObj, DespawnObj
TargetG1 use 2 animations for despawn
add DevMode (http://.....?dev=true)
use Mousetrap for key bindings
Stage4UserInput as singleton
manage screenInit from Stage4Layer2D (ko)