1.42.0

Features

• add megaphone integration tests ([b2132f6](https://github.com/mozilla-services/autopush/commit/
  b2132f6), closes [#1129](https://github.com/mozilla-services/autopu
  sh/issues/1129))
• add megaphone API query and repeating service updating ([cb21dc9](https://github.com/mozilla-se
  rvices/autopush/commit/cb21dc90f9f49133f441d299c5305509bbbcda37))
• add megaphone broadcast handling, ping check, server tracking ([1fe4eeb](https://github.com/moz
  illa-services/autopush/commit/1fe4eebdcd5a7d4ed6134f46ea2c470ec2c01326))
• add megaphone service change tracker ([ec13155](https://github.com/mozilla-services/autopush/co
  mmit/ec13155b3f1f24b2b06e93837c534f552b3c2648))

Refactor

• rearrange/hack back to 100% coverage ([80e79b0](https://github.com/mozilla-services/autopush/co
  mmit/80e79b0e93c719bf0dafd979fb4e978d879ff868), closes [#1143](https://github.com/mozilla-services/a
  utopush/issues/1143))

Bug Fixes

• add missing setup_module() function to test_db ([3266888](https://github.com/mozilla-services/a
  utopush/commit/32668884c834320d77ac03b3b05ae0acb54459ac), closes [#1157](https://github.com/mozilla-
  services/autopush/issues/1157))
• Add ClientError handler to UnregisterCommand ([9b99c28](https://github.com/mozilla-services/aut
  opush/commit/9b99c2851ac5237373ec8615a570c9d04c867df9))
• Handle PotentialDataLoss error ([7f60f82](7
  f60f8278641a6bfea53c30fdb17dbc4f44e7777), closes [#1151](https://github.com/mozilla-services/autopus
  h/issues/1151))
• remove GCM collapse key ([65f1003](65f10032
  0d6da4bd0765a0d5a540ffc773c8d9f8), closes [#1149](https://github.com/mozilla-services/autopush/issue
  s/1149))
• fix _expiry() function to use seconds ([cfcad77](https://github.com/mozilla-services/autopush/c
  ommit/cfcad77acf5e73178cfd2a3f289ab2d59781401e), closes [#1073](https://github.com/mozilla-services/
  autopush/issues/1073))