Initiali implementation of send.
Package for tests.
Add metric firing and logging sender (for use in tests).
Errors for go_http.
Make api_url optional.
Reflow __all__ for future additions.
Remove go_http.errors for now since we're not going to use it.
Add requests_testadder for testing requests.
Tests for HttpApiSender.
Add tests for LoggingSender.
Assert that LoggingSender logs sends.
Add test for default session.
Add test for default api_url and use example.com as domain in tests that make API requests in case the TestSession is accidentally not used.
Format metric logging more consistently on Python 2.6.
Require requests >= 2.
Merge branch 'feature/issue-1-simple-sending-client' into develop