Additions to install.R: learnr 0.10.1.9007 and gradethis 0.2.0.9001

[elb0]

Hi folks,

The gradethis package needs learnr version 0.10.1.9007. The CRAN version is currently only up to 0.10.1 (annoying).

Would you be okay with updating learnr and adding gradethis from the curent GitHub versions?

gradethis description where it states requirements for learnr: https://github.com/rstudio-education/gradethis/blob/master/DESCRIPTION

learnr on GitHub v0.10.1.9007 : https://github.com/rstudio/learnr
gradethis on GitHub v0.2.0.9001: https://github.com/rstudio-education/gradethis

Use case for gradethis: Provides feedback on results/code run in interactive components of a learnr activity.

You'll know it is working if the following runs without error:

remotes::install_github("rstudio/learnr", force = TRUE)
remotes::install_github("rstudio-education/gradethis")
gradethis::gradethis_setup()

Thanks!
Liza