Added public IP in VPC support to EC2.
Updated Opsworks to take advantage of VPC.
The name parameter is optional for the CopyImage API call of ec2.

Make the name parameter optional for the copy_image method. The default value is the same as that
of the source AMI being copied [1].

[1]: http://docs.aws.amazon.com/AWSEC2/latest/APIReference/ApiReference-query-CopyImage.html
Return the part/key so that the user can manage multipart uploads

Currently uploading a part does not return the key. The key is
important as it contains the server generated etag which may
then be used by the user to complete the multipart upload
without asking the server for a list of parts.
Add unit test for getting the etag from the uploaded part.
Updated Opsworks docstrings to latest.
Switched SWF over to SigV4.
Revert "Merge pull request #1683 from danielgtaylor/rds-vpc-sg"

This reverts commit 1b8d700f54a5247ff942d67cf5c436ffa5c4a301, reversing
changes made to b22091fa21d4925e54ed0146d2f205ceb36995e4.

dialt0ne's version of vpc + security groups for RDS is more complete.
rds support for vpc security groups (rebased on boto 0.10.0 master)
Add unit tests to dialt0ne's VPC implementation

Unit tests are based on those of danielgtaylor,
with additions for reading VpcSecurityGroup during
a call to get DB instance.
Example update and PEP8 fixes
Fixed SNS' ``publish`` to behave better when sending mobile push notifications.
Merge pull request #1694 from danielgtaylor/rds-vpc-sg2

A more comprehensive implementation of rds vpc security groups. Fixes #1694, #1685.
Merge branch 'ec2-public-ip-vpc' into develop
Merge branch 'swf-sigv4' into develop
Added release notes for v2.11.0.
Bumping version to 2.11.0
Merge branch 'release-2.11.0' into develop

* release-2.11.0:
  Bumping version to 2.11.0
Added the v2.11.0 release notes to the index.
Added a in-development release notes doc for the next release.