Add py.test to the dev requirements
Ensure prev/next properties behave with 0 results
Hide prev/next links if they're not present

Rather than only making a link if they're present, simply hide them
entirely if they aren't.
Replaced the uses of "mock" with the standard library's unittest.mock
Added Alex Grönholm to AUTHORS
fix a minor grammar-o and update some bits for #278
Simplified the database setup in conftest.py and removed unnecessary explicit engine.connect() calls from the various db.py modules
Merge pull request #274 from necaris/no-prev-next-with-no-results

Don't show prev / next elements when they're not available
Merge pull request #275 from necaris/pytest-in-requirements

Add py.test to the `dev-requirements.txt`
Merge pull request #277 from agronholm/mock

Mock
Merge pull request #279 from r1chardj0n3s/doc-fixes

fix a minor grammar-o and update some bits for #278
Small style fix
Merge pull request #273 from agronholm/master
Remove no longer needed compatability code
Clean up our list of includes files
Clean up setup.py to not leak fds and be clearer
Merge pull request #280 from dstufft/remove-compat-code

Remove no longer needed compatability code
Merge pull request #281 from dstufft/small-packaging-fixes

Small packaging fixes
Use Wheels to make the tests run much much faster
Merge pull request #282 from dstufft/faster-tests

Use Wheels to make the tests run much much faster