Release 0.21.1

Release 0.21.0

Release 0.20.0

Release 0.19.0

Release 0.18.0

[Add] uml based htmlDocsGenerator, remove ecore based htmldocs genera…

…tor; fixes #40

[Include] xml docs in nuget packages

[Add] sumbols to nuget packages

[Bump] to version 0.16.0 and update release notes to indicate [TAG: 2…

…024-12]

[Update] Viewer Dockerfile to .NET9

[Update] to SysML2.NET version 0.14.0

[Update] SysML.ecore from source git repos - [TAG: 2024-07] (regenerate code)