Update to .NET 9
Add new converters:
- EqualityToBooleanConverter
- EqualityToVisibilityConverter
- CollectionNotEmptyToVisibilityConverter
Changes:
- 2202f56 Update references and update to .NET 9
- c7392e4 [Dev] Add the CollectionNotEmptyToVisibilityConverter
- ed00f6d [Misc] Fix typos in README
- f8c4bfe [Dev] Add Equality converters
This list of changes was auto generated.