More 0.1.9 in progress

⦁    Dungeon rooms briefly describe "challenges/events" already investigated.

⦁    Allowed player to backtrack through dungeon rooms.
⦁    Added a few more dungeon challenge/events to fill out placeholders.
⦁    Bugfix: exiting a dungeon didn't clear the internal list of room exits.
⦁    Bugfix: Updated wearable treasures to use new body locations.

In 2.0 I'll be looking at a quest system (so there's a proper end goal) and improving towns in general.