3.0.0

Version 3.0.0
Version 3 comes with a lot of enhancements and fixes

Fetch:

• FetchGroupListener. FetchGroupListener extends from FetchListener and allows you to listener for
  updates on a group. The methods on FetchGroupListener will return a FetchGroup object that contains
  all the downloads in a group and will inform you which download triggered a change on the group. Also see AbstractFetchGroupListener.

• Added new method to rename a completed download's file. see Fetch.renameCompletedDownloadFile method.

  Observers:

• Introducing FetchObserver. Fetch now allows you to subscribe from updates for a single Download or a Group of Downloads.
  Using the FetchObserver and FetchGroupObserver interface respectively. See Fetch.attachFetchObserversForDownload(id, observers...) documentation
  for more information. Also check the sample app for usage.

• Introducing FetchGroup. FetchGroup is an object that contains all information about a group Fetch manages. The group is
  automatically updated any time a download from the group updates. You can subscribe to FetchGroup's using the FetchGroupObserver.
  FetchGroupObservers attached to a FetchGroup will be notified when downloads on a group changes. You will be notified of
  the Reason for the change as well. See Fetch.getFetchGroup(id, callback) documentation for more information.

  Database:

• Fetch now allows you to provide your own database manager to manage downloads. See the FetchDatabaseManager documentation and
  FetchConfiguration.Builder class to get started. Note: Fetch depends on your FetchDatabaseManager methods to be synchronized to work correctly.

  Download:

• Added new fields on the Download objects. Fields: etaInMilliSeconds, downloadedBytesPerSecond. See documentation.

  Fixes & Small Improvements:

• You can now set the Handler Fetch will use to perform all operations on. See FetchConfiguration.Builder.setHandler method.

• Fixed a bug that prevented notification buttons (pause, cancel, resume, etc) from firing the intent.