Add comma to the list of keypress events

[haltsir]

Hey,

Please, add comma (,) to the list of keypress events. My usecase is that I have an input that generates a list of labels. I want the user to be able to type labels seamless, which means that when listen them with commas, the comma press should create a new label and clear the field. Unfortunately right now the comma is not supported as a keypress event.