1. Integrated support for dungeon pack config options into the code
(i.e. we actually DO what the settings specify)
2. Added random transitions from one dungeon type to another. Dungeons
might also begin with a non-default pack.
3. Fixed a config reading bug that caused settings to be ignored and
some invalid settings wouldn't trigger exceptions. Also fixed other
dungeon pack bugs.
Added code for parsing dungeon pack config files. The settings for our
built-in dungeons are now read from a file instead of being hardcoded.
One or two settings aren't being accessed yet and we still don't search
for other dungeon packs in the custom dungeon folder. That'll come in
another commit.