Pending full release...

Merge pull request #8 from libsv/fix/pubKeyBytes_race

Data race fix - pubKeyBytes

Merge pull request #7 from libsv/feat/derived_keys

Extended Key Derivation helpers

Merge pull request #4 from libsv/fix/derivation_counter

fixing up bit shifting and sorting tests

Merge pull request #3 from libsv/enhancement/seeded_derivationpath

Merge pull request #2 from libsv/jsonenvelope

update workflow to use correct branch name