Supercell

---------------------------

- Optionally install signal handlers
- Fix: the exception is called NotImplementedError.
- Fix minor typo in provides docstring

------------------------

- add graceful shutdown
- allow logging to `stdout`
- Enable log file name with pid
- General base class for middleware decorators
- Typed query params deal with validation of query params

---------------------------

- add a NoContent (204) http response
- upgrade schematics to 0.9-4 (7, 8)
- add a text/html provider for rendering html using tornado.template

---------------------------

- Raise HTTPError when not returning a model
- A ValueError thrown by Model initialization returns a 400 Error
- fix for broken IE6 accept header
- allow latin1 encoded urls
- show-config, show-config-name and show-config-file-order
- enable tornado debug mode in the config
- Only add future callbacks if it is a future in the
request handler
- Unittests using py.test
- HTTP Expires header support
- Caching configurable when adding the handlers
- Stats collecting using scales
- Fixed logging configuration

------------------------

- Introduce health checks into supercell
- Add a test for mapping ctypes with encodings

-----------------------

- Only call finish() if the handler did not
- Minor fix for accessing the app in environments