use auth_handler to specify host header value if possible
a more robust test for the function
Update README.rst

the release notes in the github wiki seem to be no longer maintained.
Merge pull request #1869 from robbyt/patch-1

Update README.rst
Delete the changelog.

Since it hasn't been updated in 2 years.
Merge pull request #1870 from Celc/patch-1

Delete the old changelog in favor of the README link to ReadTheDocs changelogs. Fixes #1870.
Added support for CopyDBSnapshot
Add support for Amazon Kinesis
Add a license and handle timeouts if the stream never becomes active or no records are ever read within the given time limits.
Explicitly call time.sleep to make grepping easier
Added unit tests covering RDS DBSnapshots methods
Merge pull request #1872 from juanfont/develop

Add support for RDS CopyDBSnapshot. Fixes #1872, #1865.
Remove changelog from manifest.
Add max results parameters to EC2 describe instances and describe tags calls. Also updates describe spot instance price history call with a max results parameter.
Merge pull request #1873 from danielgtaylor/ec2-max-results

Add max results parameters to EC2 describe instances and describe tags. Fixes #1873.
Added more DBSnapshot attributes
Version bump to 2.19.0 and added release notes.
Merge branch 'release-2.19.0'
Merge branch 'release-2.19.0' into develop.
Updating elasticache parameters to be optional

With the addition of Elasticache for Redis, AWS has made certain
parameters to the endpoint optional. This commit reflects that change.