new blocks up to Minecraft 1.3; started refactoring blockimages.cpp
added inverted slabs
bugfix for reading incremental update params
new blocks up to Minecraft 1.2.4
new jungle blocks
new blocks up to Minecraft 1.0
new blocks for 1.6
new blocks for Beta 1.4 and 1.5
changelog for 0.7.2
changelog for 0.7.1