user authentication (v0.5)
token authentication (v0.6)
unit testing (v0.7)
test coverage (v0.8)
more tests (v0.9)
large project structure (v0.10)
json decorator (v0.11)
pagination (v0.12)
expansion of collections v(0.13)
HTTP caching (v0.14)
rate limiting (v0.15)
asynchronous tasks (v0.16)