* Fixed URL to 'Create Issue' button in readme * Changed CI/CD vendor from Travis to CircleCi.
**Breaking Changes**: Breaking Changes introduced in order to improve caching. * Changed `__CACHE__` object type from `list` to `dict` * Changed get cache interface from `ContentTypeCache.get(content_type_id)` to `ContentTypeCache.get(space_id, content_type_id)`
1.13.1
* Fixed a bug to retrieve an entry when raw_mode is enabled.
1.13.0
Added * Added `_metadata['tags']` to read metadata tags on entry and asset.
1.12.4
Fixed * Unresolved single references fields will no longer return the invalid Link and return None instead, matching behaviour of multiple references fields, where unresolvable links are ignored. [58](https://github.com/contentful/contentful.py/issues/58)