Add *.obj to .gitignore
Normalize sounds

- Volume of each current sound effect is closer in
  relation to each other.

- Changed dirt (sounds like a 'deeper' gravel) and
  wood. Removed 'clunk' sound from water_break
  and added leaves_break sound to flowers.
Simplifies world.pxd notation.
Testing text input fields

- Press 'T" during gameplay to popup a text field. This could
  be used for user commands, chat, etc.

- The field is generalized so it can be drawn anywhere,
  options that require user input, for instance.

- Made  a base control class gui.Control
wood_axe should be an item instead of a block
Added ItemStack.get_object method.
Added more tools
Fixed conflict
Main menu tweaks.
Main menu tweaks (2).
Added inventory_when_crafting_table.png for future crafting table GUI. (TODO: Change inventory_when_crafting_table.png and inventory_when_furnance.png to "new" style)
Allow users to break blocks faster with the correct tools
Added coal and diamond item
Some initial work on crafting table GUI.
Merge branch 'master' of https://github.com/boskee/Minecraft
Added stick and recipe for torch
Added stick texture
Merge branch 'master' of git://github.com/boskee/Minecraft
Further crafting table GUI changes.
Merge branch 'master' of https://github.com/boskee/Minecraft