Tracking issue for better Unicode version support.

Things to do:

• create a build tool based on https://github.com/fluffos/fluffos/tree/master/src/thirdparty/widecharwidth to extract needed Unicode information for a specific version
• automate version addon creation as far as possible with the build tool
• options to treat ambiguous character as double width

better Unicode support in general:

• bidi and grapheme support
• long run: conceptual work towards a better unicode handling in terminals via terminal-wg