* Add support for additional notification props (Zak Barbuto)
 * Add stalebot configuration (Kevin Delisle)
 * create pr template (Sakib Hasan)
 * create issue template (Sakib Hasan)
 * Add CODEOWNERS file (Diana Lau)
 * update node version in travis (Diana Lau)
 * Add fcm tests (Zak Barbuto)
 * Add fcm support with addNotification (Zak Barbuto)