Merge pull request #39 from nhandler/knusbaum-branch

Added movement between tiles.
Added basic bullet functionality allowing player to shoot laser and hit crates to set them on fire. Fire laser with l.
Merge pull request #42 from nhandler/canaday-branch

Added basic bullet functionality.
Bug fix for bullet.py
[Issue #12] Added base enemy class
[issue #12] Added enemy sprite to the screen
[issue #12] Added enemy.png file and collision
[issue #12] Added movement for enemies
[bug fix] Fixed black background added in sprite
added basic tests for bullet class
[Issue #12] Enemies get removed when they get hit
[Issue #12] tests
Merge pull request #45 from nhandler/canaday-branch

added basic tests for bullet class
Merge pull request #44 from nhandler/enemy_branch

Looks good
Changed importing "Enemy.png" to "enemy.png" so imports work correctly.
Added cs429 symlink so game runs correctly
Merge pull request #47 from nhandler/symlink

Symlink