Using base_size to set geomn_defaults

[Olivia-Box-Power]

use_afcharts will use the theme base_size to set geom defaults (e.g. the default linewidth for geom_hline). However, as these properties are not part of the theme they can not be overwritten by theme_af.

library(ggplot2)
library(afcharts)

# base_size argument of
use_afcharts(base_size = 40)

ggplot() +
  geom_hline(aes(yintercept  = 4.187))

use_afcharts(base_size = 10)

ggplot() +
  geom_hline(aes(yintercept  = 4.187))

# base_size argument of theme_af doesn't impact linewith
ggplot() +
  geom_hline(aes(yintercept  = 4.187)) +
  theme_af(base_size = 40)

We could

1. Leave this as is
2. Use a different argument name for setting geom defaults
3. Update the geom defaults to fix them to a particular size, unrelated to the base_size