Make a new release in time for GAP 4.10

[olexandr-konovalov]

It's time to work on this.

• extend README file
• make a new release
• write to GAP Support asking to submit it for the redistribution with GAP

[olexandr-konovalov]

@vendramin just realised that as soon as this package will be redistributed with GAP, we will have packages for each letter of the English alphabet:) We need to complete the README file - some other READMEs from https://github.com/gap-packages can be sources of inspiration, see e.g. https://github.com/gap-packages/wedderga

[olexandr-konovalov]

@vendramin thank you - tomorrow I will increment version to 0.3.0, publish a release, and email to GAP Support suggesting to add it for the redistribution.

[olexandr-konovalov]

@vendramin made 0.3.0 release. I suggest we still do some more work and polish the manual https://gap-packages.github.io/YangBaxter/doc/chap0.html. There are some omissions in the text (dots instead of text) and the table of contents does not look right: Preliminaries are at the end, and provisional titles "YangBaxter automatic generated documentation" should be replaced by something else. But hope we will be there in time for GAP 4.10.1.

[olexandr-konovalov]

#51 fixes the problem with the ordering and titles of chapters and sections.

[olexandr-konovalov]

All done.