Version 0.2.1

This patch release:

 * Ensures kernels are shut down when the client closes gracefully (PR 22)
 * Adds developer documentation (PR 24)
 * Improves the stock price example (PR 25)

This release:

- changes the default port to 8866 (PR 21)
- tidies up stdout logs (PR 19)
- all exceptions raised, including those raised in callbacks, not get logged to the error area (PR 23)
- adds basic sphinx documentation and examples (PR 14)

This minor release improves logging.

This minor release tidies up the codebase. There are no functional ch…

…anges.

This minor release:

 - fixes the output widget
 - allows customising the location of static directories for passing custom HTML
 - fixes an error where the kernel was absent

This minor release fixes frontend style issues:

 - Correctly serving font-awesome to allow the display of icons (PR 7).
 - Correctly handling widgets taller than the screen (PR 10).

Initial release