7DRL Day 2

Day two done!  Movement of the player character was completed on day 1 (numpad arrows, or QWEADZXC).  Implemented visibility/known tracking for the rogue (and allies, should that get implemented), which is exposed through a visual cue.  Generating stairs and going up and down stairs (<, > keys and tiles) also now works.

Unfortunately, discovered some serious issues with the latest release of the framework I was planning on using for the Rogue agent, and rolling back to earlier versions isn't realistic.  If it doesn't get fixed within a few days, might have to live with the same AI as the normal creatures.

As always, SNAPSHOT builds are the latest builds pushed from my CI server (when I have them enabled).  Other jars are releases from checkpoints where the game is more stable and has significant new features from the previous release.