- Replaced `size = 0.5` with `linewidth = 0.5` in `geom_hcintersect()` and `geom_xribbon()`. - Replaced `aes_string()` with `aes()` in examples (and internally). - Removed use of `tidyverse` package. - Now tests values to 12 significant digits. - Fixed description of `ssd_hp()` to be percent affected rather than percent protected.