Implemented methods to get blocks above/below a specific block, check if the block is dangerous, hollow, or transparent

Added methods to convert blocks to itemstacks

Added a 'lastlocation' variable to the playerwrapper; going to be used for /back (and other) commands
Merge remote-tracking branch 'origin/master'

Conflicts:
	.idea/workspace.xml
Merge remote-tracking branch 'origin/master'

Conflicts:
	.idea/workspace.xml