Bump version to 2.3.4 and update hashlib_codecs dependency to 3.1.2

Refactor `HashDigest` class to extend `ByteCollector`

Bump version to 2.3.2 and update hashlib_codecs dependency to 3.1.0

Update funding

Support Dart v2.19 for NodeRandom

Merge branch 'master' into v1

Fix typo: Alder is renamed to Adler

Merge branch 'master' into v1

Exclude some test platforms in github workflow

Version 2.1.0