powerups
tweaked game physics, implemented jump instead of jetpack shit
Merge branch 'ryan'

Conflicts:
	app/class_Level.lua
Merge branch 'errol'
Merge branch 'master' of https://github.com/itsacezon/BarrelJoyride into errol
fixed timeout of invisibility and collision effects while invisible
tweaked game physics, implemented jump instead of jetpack shit
Merge branch 'ryan'

Conflicts:
	app/class_Jetpack.lua
tweaks
Merge branch 'master' of https://github.com/itsacezon/BarrelJoyride into errol
assets
Merge branch 'master' of https://github.com/itsacezon/BarrelJoyride into errol
fixed Missile invi collision