Update Travis config to test ruby 2.1.2.

No longer testing ruby 2.1.0.
Bump version number.
Merge branch 'next'

* next:
  Move to use the rubyzip 1.0 API.
  Test that a run can be cancelled while running.
  Test that a run can be cancelled while waiting to start.
  Remove odd save! in worker code.
  [SERVINF-457] Clear "waiting for user input" message.
Update the Changelog.