Merge tag '0.2.0' into develop

0.2.0
Starting 0.3.0
Merge tag '0.2.1' into develop

0.2.1
Support for getting the volume from Prime.
Requires more work for getting the current volume for HTML5.
Support for the legacy html5 player and the closed caption preference panel.
fix instantiation errors with legacy argument.
add unit tests for player instantiation.
update History.md
Merge branch 'release/0.3.0'