Release 0.2.0 - support for pkgname::main procedure

This release adds support for pkgname::main argv procdures. See the README for more details.

Initial release January 2023

This is the first release which should provide already the main features. Please note, that currently no package really supports this approach, so you should create your own underline files in your config folder. May be in the future packages will appear which supports this approach.