R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'skytrackr'

skytrackr::skytrackr_benchmark |  | Benchmark | HTML | source | R code
skytrackr::skytrackr_optimization |  | Optimization tips | HTML | source | R code
skytrackr::skytrackr_parallel_processing |  | Parallel processing | HTML | source | R code
skytrackr::skytrackr_vignette |  | The skytrackr R package | HTML | source | R code