Request for flood fill

Would it be possible to add a flood fill / paint-bucket tool? Most other ASCII and ANSI programs have one and it's kind of a pain to fill in outlines one character at a time.

Closing this, as it's more of a feature request and there is a card for a flood fill tool on the Playscii Trello: https://trello.com/b/BLQBXn5H/playscii