Cherry pick 5d74aa1dc5a57303d48396b6ad3a6a6bdac5b842 from https://github.com/jeremyramin/term.js. Fixes issues with zsh scrolling by not returning early from scroll handler when applicationKeypadMode is enabled.
Cherry pick 5d74aa1dc5a57303d48396b6ad3a6a6bdac5b842 from https://github.com/jeremyramin/term.js. Fixes issues with zsh scrolling by not returning early from scroll handler when applicationKeypadMode is enabled.

Floobits/atom-term.js,Floobits/atom-term.js