Merge pull request data61#59 from n1analytics/feature-markdown-render…

…ing-pypi

Render Markdown in Pypi.

Fix sphinx build (data61#56)

* Grab version from setup.py when build docs
* Move to one source of package version

Update version and docs

Version 1.2.3 (2015-06-02)

=====

Documentation and bugfix release.

Features
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- Better support for alternative encoding schemes (including a new example). Public key now has
  an `encrypt_encoded` method. `decrypt_encoded` optionally takes an `Encoding` class.
- Command line tool documentation.
- Much expanded notes on key serialisation.

Bug Fixes
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- Several tests for encrypt/decrypt only encoded/decoded.

Version 1.2.2

Version 1.2.1

Version 1.1

Add tag for first push to PyPI