EMR: Add cluster state filters shortcut --active, --terminated and --failed in list-clusters command.
EMR: Removed Version from Applications schema.
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.
Further cleanup of help text.