Deprecate user-facing size and fatten arguments for ggplot2 4.0 compatibility#430

ishaan-arora-1 wants to merge 2 commits intostan-dev:masterstan-dev/bayesplot:masterfrom

ishaan-arora-1:fix/deprecated-ggplot2-args-408ishaan-arora-1/bayesplot:fix/deprecated-ggplot2-args-408Copy head branch name to clipboard