R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'couplr'

couplr::algorithms |  | The Algorithm Collection | HTML | source | R code
couplr::comparison |  | Comparison with Alternatives | HTML | source | R code
couplr::getting-started |  | Quick Start | HTML | source | R code
couplr::matching-workflows |  | Matching Workflows | HTML | source | R code
couplr::pixel-morphing |  | Advanced Topics | HTML | source | R code
couplr::troubleshooting |  | Troubleshooting Guide | HTML | source | R code