EMR: Add cluster state filters shortcut --active, --terminated and --failed in list-clusters command.
EMR: Removed Version from Applications schema.
Merge branch 'release-1.3.25' into develop

* release-1.3.25:
  Bumping version to 1.3.25
  Update tab complete test with route53domains command
  Update changelog with new features
Fixed URL decoding bug.

Keys were being decoded twice when syncing from
s3 to s3.
EMR: Added default configuration for create-cluster. Fixed create-cluster.rst format. Added shortcut options --instance-type and --instance-count to --instance-groups.
EMR: Add MasterPublicDnsName in describe-cluster output.

EMR: Refactor sshutils.
EMR create-cluster: Change --visible-to-all users to be true by default.
Removed hard-coded BucketListerDecodeKeys.
Added a unit test to ScopedEventHandler.
Merge pull request #862 from kyleknap/encoding_bug

Fixed URL decoding bug.
Updated changelog with updates.
Merge pull request #863 from kyleknap/develop

Updated changelog with updates.
Fix resyncing unnecessarily on windows machines.
Simplified the replacing method.
Squashed commit of the following:

commit a86a63b311362daebf8f32affa6cbeb863860a6e
Author: Craig Foster <foscraig@amazon.com>
Date:   Tue Aug 5 14:59:01 2014 -0700

    Add helptext description, which says leaving instance-count creates one node cluster; sanitizing add-tags example

commit b004facd86051d7cfba43338a9b9543c8822834a
Author: Craig Foster <foscraig@amazon.com>
Date:   Tue Aug 5 13:56:34 2014 -0700

    Edit/change example text for create-cluster and add-tags
Rearranged the location of the sort function.
PEP8 formatting.
Merge pull request #865 from kyleknap/resync_bug

Fix resyncing unnecessarily on windows machines.
Fixed a unit test.
EMR: Removed Version from step schema.