add some dependencies

this does not actually make `pip install imaginary` work :/
but perhaps the fix for the remaining issues is for epsilon, axiom, and mantissa to properly declare their dependencies?
I guess maybe.
here is a minimal configuration maybe
reality makes me sad
Switch setup.py to python-versioneer.
Generate the versioneer artifacts with `setup.py versioneer` - necessary only when first switching to python-versioneer or when upgrading to a new version of python-versioneer.
Get rid of the old version export.
Merge pull request #19 from exarkun/versioneer

Replace manually managed version number plus `import imaginary` in setup.py with python-versioneer.
Merge remote-tracking branch 'origin/master' into travis-ci
Merge pull request #17 from exarkun/travis-ci

Add a very tiny travis configuration which makes travis builds do something somewhat more meaningful.

The builds still fail and they still may need some tweaking but at least they aren't just spurious rake errors anymore.
Merge remote-tracking branch 'origin/master' into setup.py-dependencies
declare the transitive dependency on nevow
Also declare the transitive dependency on PyCrypto.
Add a couple more transitive dependencies.
Try setting up the test environment so ExampleGame is importable as well.
Perhaps travis-ci does not evaluate these using a shell?  Maybe the relative path will work.
Move one of the travis installation steps from the script section to the install section where it belongs.
Allow lowercase hexadecimal in action test regex.
Merge pull request #16 from exarkun/setup.py-dependencies

Declare Imaginary's dependencies in `setup.py` in a way pip can recognize.
Merge branch 'master' into fix-scrutinize-tests
Merge pull request #20 from jerith/fix-scrutinize-tests

Allow lowercase hexadecimal in action test regex.