Improved plotting

Release 0.1-0, pre-release

But quite a lot of time spent on testing, documentation, and
fixing pkg build checks.

Devel version 0.0-10

Smaller fixes

Development release version 8

Release 0.0-7, Hovmoeller

Alpha release version v0.0-6 with additional windrose function(s)

Version v0.0-5

Alpha release version 0.0-2 for testing