Merge pull request #29 from virtualstaticvoid/feat/build-multiple-r-v…

…ersions

Add support for building multiple r versions

upgrade to R 4.2.2

fix image name in GH actions

Merge pull request #25 from virtualstaticvoid/R4.1.0

Upgrade to R4.1.0

upgrade to R 4.0.5

Merge pull request #21 from virtualstaticvoid/fix/plumber

Fix plumber build to include dependency on libsodium

Merge pull request #17 from virtualstaticvoid/R4.0.1

Upgrade to R 4.0.1

Merge pull request #16 from virtualstaticvoid/R4

R 4.0.0

added support for renv

Improvements to Build and Unit Testing

* Fully fledged unit tests
* Makefile improvements
* Updates to MIGRATING guide
* Docker image tweaks