Libuninameslist - version 20220701, unicode 15.0_Beta

This is for anyone interested in trying-out and commenting about the upcoming version 15.

If you have comments about unicode 15.0, please contact unicode.org (before 2022jul12). See this page: https://home.unicode.org/unicode-15-0-beta-review/
The review period for 15.0 Beta is before 2022jul12.

This release is marked as 14.9 for testing purposes.
If you have comments about this library, please create an issue:
https://github.com/fontforge/libuninameslist/issues