Merge pull request #1 from boskee/master

Updating
Entity attribute velocity was assigned to value 0 always, not the parameter velocity (wich default value is 0). In module items, the variable ITEMS_DIR was created as a empty list, but is used as a dictionary.
Merge branch 'master' of github.com:embatbr/Minecraft
trees gen in mini forests now

also changed the amount of trees per map, to allow for survival (when it
is implemented)
Reformats blocks.py.
Added Kytten import (GUI library for Pyglet) for future GUI stuff.

See https://github.com/kitanata/Kytten
Rewrites blocks into more pythonic classes.
Merge branch 'master' of git://github.com/ronmurphy/Minecraft
Enable texture transparency. Needs further improvements (drawing order) to make sure DEPTH_TEST is correct
Merge branch 'master' of git://github.com/BertrandBordage/Minecraft
Changes some details in block.py.
TODO addition
added --worldsize

You can now define the size of the world by --worldsize [number].
suggest even numbers only.  kytten is for potential future reference.
Merge branch 'master' of git://github.com/BertrandBordage/Minecraft
Merge https://github.com/boskee/Minecraft

Conflicts:
	blocks.py
Merge branch 'master' of git://github.com/ronmurphy/Minecraft
Bugfix
Fix to earlier "fix".
Moved ItemSelector to gui
Removed extra GLOBALS