You can automatically update the date when editing Fountain screenplays in Vim, by placing the following in your ~/.vimrc:
augroup filetypedetect au BufRead *.fountain %s/^Draft date: .*$/\=strftime("Draft date: %m\/%d\/%Y")/ augroup End
If you're converting a story into a screenplay, these Vim commands may help:
:g!/"/d :%s/^[^"]*"// :%s/"[^"]*$// :%s/,$/./ :%s/"[^"]*"/\r/g
In order, these commands: remove all lines without a quote; remove everything before the first quote of each line; remove everything after the last quote of each line; replace ending commas with ending full stops; change all other between-quotes bits to newlines.
Working these out certainly saved me a lot of typing. I hope they're of use to someone else too!