Version 0.6.3

This release saw a number of important bug and documentation fixes along with some minor enhancements.

Enhancements:

• Added support for embedding Player widget (#584)
• Add support for linking HoloViews plot axes across panels (#586)
• Allow saving to BytesIO buffer (#596)
• Allow PeriodicCallback.period to be updated dynamically (#609)

Bug fixes:

• While hooks are applied to model no events are sent to frontend (#585)
• Various fixes for embedding and rendering (#594)

Documentation:

• New example of periodic callbacks (#573)
• Improve panel serve documentation (#611, #614)
• Add server deployment guide (#642)