interim commit

Committing to pull
interim commit 2

Commit
Crow Fixes

Crow now spawns every 45s, no longer an enemy class, kills player and
self on collision, resets 45s timer on crow death.
New Level

A new level has been added.
Crow Fixes

Crow now dies and has timer reset if and when a player losses a life.
ch-ch-changes

new sprites: bouncy ball, s-cargo, goo overlay (yikes)
enemies now have a goo overlay that goes away once the enemy is no
longer in bubble
player now kills enemy even if they jump on top of
multiple bug fixes.
achetype work, level work
Continue, fly fixed

also a few other changes for playtesting purposes.
new levels, launcher tweak

launcher now shoots slightly higher than before.
Added Potions to sprites folder

There are now a blue, red, and green potion to be used as powerup
sprites.
-Travis
Updated Potions Sprites, Added to Zero

Potions are now in zero to use under the names spr_potion_red,
spr_potion_blue, spr_potion_green.
-Travis
Launcher Sprite

Added a sprite for the launcher.
-Travis
Added Launcher in Zero

**PLEASE READ**
Updated the launcher arc type. The launcher is now 128 px wide. Also
updated the box collider to fit it. The launcher was 64 px wide before,
but because the snail is 128 px wide, this launcher makes more sense.
-Travis
launcher adjustments

Size matters