remove the unneeded cache layer. the cache is for writing. we're just
reading. all the cache is doing is adding latency as it makes its copies
of map data structures.
generating a 190x190x100 dig blueprint:
before change: 1.7s
after change: 1.0s
the performance gains aren't as important here as the reduced complexity
of the algorithm, though. for reasonably-sized blueprints, the time
savings are unnoticeable.
to enable writing to a subdir that may not exist, blueprint now automatically
creates folder trees. E.g. ``blueprint 30 30 1 rooms/dining dig`` will create
the file ``blueprints/rooms/dining-dig.csv``). Previously it would fail if the
``blueprints/rooms/`` directory didn't already exist.
myk002
Myk Taylor
Daniel Brooks
Ben Lubar
Nikolay Amiantov
lethosor
expwnent
Chris Dombroski