Bumps version to 0.2a1.
Fixes broken calls. Implements --header.
Adds lib3to2 support via backport module.
Removes lib3to2 workaround.
Fixes shell syntax in travis build file.
Adds missing package in setup.py.
Fixes travis config so build fails immediately in 3to2 process.
Works around bug in 2to3. Adds requirements-py2.txt.
Fixes typo in requirements-py.txt
Backports OrderedDict.
Backports additional code for python 2.6.
Fixes URLInfo scheme detection for Python 2.6.
Merge branch 'develop'
Bumps version to 0.2.