Fix URL path regexes

Also, add a regex for UUID URL path parameter

Improve JSON encoder

Now it's possible to extend JSONEncoder with custom types (by using register_encoder decorator).
New JSONEncoder is capable of serializing the same types as drf.JSONEncoder and some additional types (enums, dataclasses).

Add HTTP PUT method

Add support for HTTP PUT (#9)

* Add .idea to .gitignore

* Add support for HTTP PUT

Resolves #6

* Update version