Player Light Level

Added a light level calculation to the player based on the 2-6 blocks
that its hitbox occupies.
Minor changes

Made TNT a light sources, changed water shading to fit the texture.
Builds for Release v0.1.0-alpha

Includes basic block placement/destruction, collision detection, a
particle system, a lighting system, and a variety of blocks. There is
still much to do.
Revert "Builds for Release v0.1.0-alpha"

This reverts commit 8a8b6313ba570a77cd25fc8fa7a979ef1dae5891.
Light Changes

Renamed block.light to block.lamp and gave it an appropriate texture.
Adjusted collision

I adjusted the way that the player object dealt with collision so as to
prevent the game from hanging if the player was pushed out of the
window.
Changed teleport

Rewrote how the teleport dealt with teleporting into solid blocks.
Adjusted particle collision

Added some checks to fix the game being stuck in a loop due to particle
collision. For more, see the comment on #11.

This fixes #11.