v1.3.0: Improved logging and new web GUI

Summary of changes

Features:

• Overhaul of framework and test record logging (#756)
• New web GUI and replacement of Station API with “Station Server” (#727)
• Addition of SerialCollectionPlug (#759)
• New --quiet flag to suppress all CLI output (#763)

Bug fixes:

• Fixes to Python 2/3 compatibility (#743, #752, #769)
• Make killable threads more robust to race condition (#740)
• Fix with_metaclass call to include the metaclass (#744)
• Fix extra exception when plug init fails (#745)
• Better handling of objects in MacAddressLogFilter (#746)
• Fix race condition in PhaseExecutor (#747)
• The test outcome should reflect failures in teardown phases (#749)
• Open test run proto as binary to avoid unicode error (#762)
• Better return values when accessing validator parameters (#764)
• The test should fail when a multi-dim measurement fails validation (#770)
• Fix a bug w/ colorama usage for test outcomes (#775)

Cleanup and refactoring:

• #748, #750, #751, #758, #771

Backwards-incompatible changes

• The old Station API has been removed entirely. Frontends should use the new Station Server—see station_server.py.
• The old web GUI has been removed. The new web GUI should be used instead--see openhtf/output/web_gui and examples/frontend_example.py.
• The signature for TestState and TestExecutor now requires passing in test_options.