Normalize file endings to LF

Fix for IndentationError (fix issue #7)

Python 2.7 used to fail with IndentationError.

Support for customising the useragent and remove unused Request class

This is needed to nicely use the MediaWiki API.

Semantic linebreaks: http://rhodesmill.org/brandon/2012/one-sentence-per-line/

* Add stubs for missing functions
* Update RELEASE-NOTES
* Add fileno parameter to HTTPConnection
* Properly fix alpha versions