Most of reorg and cleanup of World. Have about 1/2 of the docstrings to go.
Finish cleanup of World.py
Rename World.py->world.py, refactor, add to pep8 travis list.
Clean up Response.py. Untested.
Refactor Response to response. Add pep8'ing to Travis.
Organze class methods to be consistent with rest of projects.
Clean up RobotSpeech.
Refactor RobotSpeech->robotspeech, add pep8'ing to Travis.
On second though, keeping module names underscore-separated is more readable. Refactor robotspeech->robot_speech.
Clean up ProgrammedAction, refactoring a bit as necessary.
Refactor ProgrammedAction->programmed_action, add pep8'ing to all src and test python files. pr2_pbd_interaction cleanup complete.
Basic cleanup of logger node; add all python nodes to pep8'ing.
Fix tiny doc bug.
Remove some dead code, remove some unused code.
Comment out dead (but possibly wanted in future) code.
Merge branch 'style' into tests
Fix bugs in refactoring.