Update digest and vc api#161

lemoustachiste wants to merge 3 commits intow3c:mainw3c/vc-data-model-2.0-test-suite:mainfrom

blockchain-certificates:update-digest-and-vc-apiblockchain-certificates/vc-data-model-2.0-test-suite:update-digest-and-vc-apiCopy head branch name to clipboard