fixed issue related to caching entities during sync_entities
bumped version
fixed conflict
Merge pull request #38 from wesleykendall/feature/optimize

Feature/optimize
Performance optimations for caching entity relationships and doing is_sub_to_all calls
Merge pull request #40 from wesleykendall/feature/optimize

Performance optimations for caching entity relationships and doing is_sub_to_all calls
added a display name field to entity
wrote a test for verifying that the unicode representation is mirrored in the display_name
wrote test for custom display name function
updated docs
updated travis db settings
removed lingering code
removed more lingering code
changed the unicode method for entities and removed more lingering code
tested the new unicode method.
removed unused field in select_related
Merge pull request #42 from wesleykendall/feature/optimize

Display names for entities
added entity tag field and significantly reduced the api filtering capabilities