Bunch of new features and dependency updates

🎉 🎉 🎉

This one is a nice juicy release! I finally got around to looking at all of those PRs that have been sitting around for a while, sorry for the delay everyone.

Included in this release:

• Bunch of dependabot dependency updates
• (#81) chore: fixes to tests (thanks @jdcmarques)
• (#80) chore: update Node to v16 (thanks @ramprasadagarwal)
• (#75 and #78) feat: introduce new options to overwrite commiter name and email (thanks @ozaner and @promise)
• (#82) feat: introduce new option to pick sub-directory in target repo to copy files to (thanks @jdcmarques)
• (#83) chore: switch to using Node to copy files rather than bash (thanks @jdcmarques)

An extra special thanks in particular to @jdcmarques who not only opened 3 pull requests, but also fixed CI builds which helped speed up the review process considerably!