Marsilea

- Regular updates
- User can now provide extra legends

**Full Changelog**: https://github.com/Marsilea-viz/marsilea/compare/v0.3.6...v0.4.0

- Labels are supported in stats-related plots
- Minor bugs fixed

- Minor bugs fixed

- New plotter: `Area`

What's new
* Document updates
* Small bugs fixed
* Most plotters can now add label 24
* Redesign of split API 29

PR
* Correct the typo related to the order of `FixedChunk` parameters by liuzj039 in https://github.com/Marsilea-viz/marsilea/pull/28


**Full Changelog**: https://github.com/Marsilea-viz/marsilea/compare/v0.3.2...v0.3.3