Release 1.20.0

This release fixes #170, thanks to Federico Buti

Contains:

• Merge pull request #173 from wswebcreation/dependabot/npm_and_yarn/moment-2.29.2 (d4ccc58)
• Merge pull request #174 from wswebcreation/dependabot/npm_and_yarn/minimist-1.2.6 (23d180a)
• Merge pull request #171 from BaCaRoZzo/issue#170 (c08b740)
• chore(deps): bump minimist from 1.2.5 to 1.2.6 (0e990ed)
• chore(deps): bump moment from 2.29.1 to 2.29.2 (435dcb3)
• Mention custom metadata behaviour in readme and fix typos (d1b84f8)
• Ensure custom metadata is overwritten only if not set already (fa620c8)
• chore: fix deps (0f39374)