Belatedly bump version number

This is in support of the practice of having the version number
in the repository be what it will be upon the next release.  In
particular, the first commit following a release should have the
version number bumped.  In a forthcoming merge, infrastructure for
appending commit hashes to version strings for non-release commits
will be implemented.
Merge branch 'master' into version

Conflicts:
	polytope/__init__.py
	setup.py

The only nontrivial part of this merge is changing occurrences
of the version 0.1.0 with 0.1.1