Anaconda Enterprise: Documentation

# 0.9.3 (Aug 2015)

This release was focused into provide several usability enhancements, better docs, new examples, a lot of bug fixes and an improved testing machinery (using pytest and selenium-based test).

- Support horizontal or vertical spans
- Provide raw_components version of bokeh.embed.components
- Prevent Bokeh from eating scroll events if wheel tool is not active
- bokeh.models.actions are now called bokeh.models.callbacks and Callback is now CustomJS
- Additional validation warnings
- Cleaned up gulp source mapping
- Fixes in our build machinery
- Cleaned up models section of the reference guide
- Use pytest instead of nose
- Beginning to add selenium tests