Release 1.7.0
This release includes:
* Documentation Cleanups
* Fixes to make the migrations and unit tests work on MySQL 5.7
* DB API changes
* A new DB API method, get_runs_counts_by_run_metadata(), to get
the number of runs that have a key value run metadata pair
* A new DB API method, get_recent_successful_runs_by_run_metadata(),
to get a list of recent runs that have a key value run metadata pair
* A new option on get_test_runs_by_test_id() to order the results by
date
* A new DB API method, get_runs_by_ids(), which will get a list of
runs by ids