Update version strings to 0.1.3-dev
Merge pull request #448 from ElBrogrammer/0.1.3-dev-version-updates

Update version strings to 0.1.3-dev
Add powertrip.py script

Has checks for missing __init__.py files in test directories.
Add execute permissions validator
Add Cython-generated C code validator
Complete refactoring of the code

Much cleaner and less duplication. Added docstrings and comments.
Add powertrip.py to Travis, manifest, changelog
Add __pycache__ directory to ignored dirs

Didn't know that py3 created these
MAINT: added names in place of placeholder
Merge pull request #460 from gregcaporaso/issue-459

fix error in COPYING.txt
Use sets instead of tuples

Thanks for suggesting this @ElDeveloper!
Merge pull request #453 from ElBrogrammer/issue-446

Added power-tripping tool
Merge branch 'master' into release-instructions

Conflicts:
	MANIFEST.in
Add changelog mention