Custom Bulleted Lists

`._formatCustomList` accepts a custom list bullet, as well as an array of list items.

:cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom::cherry_blossom: