Fixed some warnings.
Removed some javadocs for nonexistant parameters in Vector2D methods.
Added cylinder->polygon conversion.
Removed some debug prints.
Bukkit package naming changes for 1.6.1.
Added blocks and items for MC 1.6
Update MobType list, even though it's almost never used.
Updated changelog for 5.5.7
Fix some maven tests
[maven-release-plugin] prepare release 5.5.7
[maven-release-plugin] prepare for next development iteration
Merge remote-tracking branch 'weteam/master' into merge

Conflicts:
	src/main/java/com/sk89q/worldedit/regions/Polygonal2DRegionSelector.java