made updates to room, turtle, and a small revision to sprite
Merge branch 'master' of https://github.com/rosspcahoon/slogo.git
checkstyle n javadocs
a few more minor edits to room and turtle
Merge branch 'master' of https://github.com/rosspcahoon/slogo.git
Build structure for command hierarchy and framework, TODO: implement specific commands with Room's API
Merge branch 'master' of https://github.com/rosspcahoon/slogo
Merge branch 'master' of https://github.com/rosspcahoon/slogo
NEW: Added implementation details for forward and back commands, added library build method in CommandLibrary.java; TODO: implement remaining commands, tweak command hierarchy to reduce redundancy in similar commands (e.g. fd and bk)
Merge branch 'jimmy' of https://github.com/rosspcahoon/slogo
Merge branch 'master' of https://github.com/rosspcahoon/slogo into view

Conflicts:
	src/controller/Controller.java
	src/model/Model.java
	src/model/PenTrail.java
	src/model/Room.java