chore(ref-imp): official release

release commit [skip ci]

Sidetree Spec v1.0

chore(ref-imp): publish release [skip ci] (decentralized-identity#1021)

chore(ref-imp): publish release [skip ci]

chore(ref-imp): publish release [skip ci]

chore(ref-imp): publish release [skip ci]

chore(ref-imp): publish release [skip ci]