More whitespace updates to stay flake free
Add in fabric task to run style checker

Running:

  fab check

Will run the standard PEP8 and pyflakes checks.
Merge pull request #52 from ahinz/topic/flakes

Topic/flakes
Wire up search parser/executor to endpoint

Some initial tests with tree diameters
Extract instance_request to avoid mutual imports

Also, update branch and fix tests for flake8 updates
Merge pull request #51 from ahinz/topic/dbh-filter

Wire up search parser/executor to endpoint
Add support for WITHIN_RADIUS queries