* added base cloudfrontbackend and testcase
* added boto3 cloudfront client
* implemented create invalidation method
added error handling botocore
* added aws docs
* fixed typo
* flake8 fixes
* added boto3 configuration docs
* removed return
* purge path instead of full url
* added multisite hostname mapping
* added validation of DISTRIBUTION_ID
* renamed Cloudfront to CloudFront
* added note to include www in mapping
added tests for cloudfront site mapping
* removed deprecated has_key, used in
fixed _create_invalidation
* changed type checking of dict
removed debug line of code to check hostname
* fixed dict type checking condition
added assert t make sure no invalid cache is being purged
* changed import order
* fixed isort error
* more detailed error message for cloudfront
pep8 fixes 120 chars per line
* Log missing cloudfront distribution id as info
Was logging as error, but it may be possible that a developer wants cloudfront on only specific hostnames.
* , => .
* Docs edits
* Removed hard-dependency on boto3
