Prep v6.2.0

Prepare v6.1.0

Merge branch 'main' of github.com:jpsim/Yams

Merge pull request #450 from lynchsft/swift_6_language_mode

Swift 6 language mode

Prepare for 5.4.0 release

Merge pull request #438 from jpsim/fix_alias_resolution_of_single_val…

…ue_types

Fix bug that sometimes caused Yams to emit an invalid Anchor/alias pair when encoding.

Merge pull request #428 from lynchsft/anchor_tag_and_autoaliasing

Implement Anchor coding, Tag coding and redundancy auto-aliasing

Fix CHANGELOG