Version 0.15.0 - August 9, 2018

Enhancements:

• Support Android 8.1 (API 27)
• Support Google Play 15.x

Deprecations:

• Campaign#getIdAsInt has been deprecated and will be removed in the next
  major release.

  While the ids happen to be integers today that may change in the future. Plan
  now to assume ids may be any form of string value.

Breaking Changes:

• Campaign#getAttributes now returns an unmodifiable map

  While this is technically a breaking change, as now modifications will throw
  an java.lang.UnsupportedOperationException, it better reflects the intended
  owner of the attributes. After a sync, the campaign is updated to match the
  server. This includes resetting the attributes to only those from the server.

• Campaign#getEndAt and Campaign#getStartAt now return copies of the dates

  While this is technically a breaking change, as you can no longer mutate the
  start and end times, these getters should always have returned defensive
  copies.

• Campaign#equals changes the behavior for campaigns with missing ids

  When a Campaign instance lacks an id it will no longer be equal to other
  instances that are also missing an id. Instead they will now only be equal to
  themselves (i.e. the same object instance). Campaign equality is based on
  the id and without this value comparison behavior is undefined.