Minor Improvements and Debugging Tweaks

Minor improvements to the readability and performance of
SchematicLoader. Added a little temporary code for debugging purposes.
Overhauled SchematicLoader (again)

Rotations in SchematicLoader are understandable now. I changed all the
code to use transformPoint() and made sure that the rotations in there
are correct. Testing shows that rooms are being generated correctly. I
also edited portions of the code for clarity and removed some debug
prints. The loading process now allows permafabric to generate - it was
previously converted into regular fabric of reality.  For the moment,
the code is stuck to assume that the entry direction is North. I'll
remove that constraint in the next commit.
Added Support for Arbitrary Entrance Directions

Changed SchematicLoader so that schematics that have entrances that are
not facing North will still be rotated properly. This involves a
workaround for transformMetadata() since it assumes schematics are
always saved "facing" North.

I've tested this and it's working perfectly, with one exception. If you
create a rift with dd-rift to a dungeon that wasn't saved pointing
North, the rifts sometimes appear beside the player, instead of in the
block where the player's head is. Sometimes you'll appear in the dungeon
facing the right way. Other times, you'll appear inside a wall adjacent
to the entrance or near the entrance facing the wrong way. I have not
managed to narrow down why this happens.
Merge pull request #39 from SenseiKiwi/master

Improvements to SchematicLoader