Merge branch 'release-0.7.0'

* release-0.7.0: (21 commits)
  Bumping the version to 0.7.0
  Adding regions for SWF.
  Some updated models.
  Further work on #28.
  Set maxDiff to None for ec2 response parsing
  Removing jsondoc attribute customization from IAM model.  No longer needed with file-based parameters.
  The name of the SigV3 auth should be v3 not v3https.
  Make sure we have a dict before trying to reference it's content.
  fixing OpsWorks unit test.
  Raise a NoCredentialsError when no credentials are found.  Fixes #29.
  Fixing typo bugs in handling of list parameters.  Fixes #27.
  Removing unicode prefixes on string constants.  Python 3.x was not amused.
  Responses now correctly map xmlnames to key names.  Fixes #28.
  Regen latest models
  Remove newline in xml element in docs
  Update rds and redshift models
  Update sqs model
  Extract iam customization into .extra.json file
  Update ec2 model
  Update models with new dict based operations
  ...
Merge branch 'release-0.8.0'
Merge branch 'master' of github.com:boto/botocore
Bump ec2 api version, remove membered_lists
Merge branch 'hotfix-0.8.1'
Bumping to version 0.8.1.
Rename "output" arg to "job_output"

The CLI has an "output" option already which shadows this arg.
Merge branch 'ets-create-job-rename' into develop

* ets-create-job-rename:
  Rename "output" arg to "job_output"
Readd support for proxies from env vars

This is a regression when we upgraded to requests 1.x.
A proxy can be figured via the normal env vars used by
requests.  We now forward the `proxies` arg along
to the `send()` method of the request session.

Part of this change included refactoring the endpoint classes
to remove some duplication.  I've also added unit tests for
these changes.
Merge pull request #32 from jamesls/readd-proxy-env

Readd support for proxies from env vars
Fixing a bug in the JSON service description for OpsWorks.
Merge branch 'develop' of github.com:boto/botocore into develop
Fix opsworks unit test.
Bumping version number.
Adding ap-southeast-2 region for directconnect.
Use key instead of cmp, for py3 compatibility

The cmp arg to sort was removed in python3.
Merge branch 'issue33' into develop

* issue33:
  Use key instead of cmp, for py3 compatibility
Fixing IAM Roles for S3.  Fixes #34.
Merge branch 'develop' of github.com:boto/botocore into develop
Add test for using the "extra" dict in translate.py