Add unit tests for Image/get_all_images
More notes.
Fixes #1722 - Missed a place where ``dry_run`` is supposed to be supplied.
Revert "Fixes #1709 - Cannot create Launch Configuration with Block Device Mappings"

This worked correctly for AutoScaling, but broke EC2. A modified patch
will land shortly.
This reverts commit 5fd728e8464b40b91a8e25058e1b828853f5cb43.
Test exposes AutoScaling ``launch_configuration`` bug when using block device mappings.
Fixes #1723 - A prior commit broke ``run_instances`` with block device mappings on EC2. This makes both EC2 & Autoscaling work with block device mappings.
More notes.
Added tests for poll() tasklist override fix.
Adding fix for poll() task_list override bug in actors.
Adding test for standard poll() behavior with no task_list override.
Merge pull request #1719 from reinhillmann/fixtests

Fix GS resumable upload tests.
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Merge pull request #1725 from tedromer/develop

More support for headers
Allowed boto to register hvm instances
Merge pull request #1700 from krallin/s3put-fix-header

s3put: accept headers values containing "=". Fixes #1700.
Fixes #1713 - Corrected a DDB bug where scanning over large set with a filter may not return all results.
Bumped Cloudsearch to SigV4.
Bumping version to v2.13.1
Merge branch 'release-v2.13.1' into develop

* release-v2.13.1:
  Bumping version to v2.13.1