Support Elasticsearch 6.x as the backend, Elasticsearch 2.x is no longer supported.
Require Python>=3.4.
Removed httplib2 dependencies.
Changed "msgpack=1" query parameter to "format=msgpack".
Support "format=yaml" return format.
Support "format=html" return format (useful for demo purpose).
Support always_list and allow_null query parameters.
Support optional "q=__any__" to return random docs.
Redesigned test helper.
Other accumulated improvements at https://github.com/biothings/biothings.api/commits/v0.3.0
v0.2.x
Not been released to PyPI.