CRAN release v0.2.1.0

What's Changed

• Speed updates from barry by @gvegayon in #1
• Orion fixes by @gvegayon in #2
• Adding a test using the formula by @gvegayon in #4
• Using barry directly by @gvegayon in #5
• barry now officially on CRAN by @gvegayon in #6
• Preparing for CRAN release by @gvegayon in #7

New Contributors

• @gvegayon made their first contribution in #1

Full Changelog: https://github.com/UofUEpiBio/defm/commits/v0.2.1.0