OVERRIDE => override in browser.h
cocoa: Enable modifying initialized menu
cocoa: Enable creating empty menu
Fix displaying context menu for devtools
OVERRIDE => override in atom_api_app.h
Add app.dock.setMenu API
mac: Release application delegate on exit
mac: Add app.addRecentDocument API
win: Implement Browser::AddRecentDocument
win: Set app user model ID

This ID is used by Windows to identify your application.
win: Add app.clearRecentDocuments API
win: Add app.addUserTasks API
Only "title" and "program" are required for AddUserTasks
Enable setting icon for addUserTasks
docs: app.dock.setMenu
docs: Recent documents API
AddUserTasks => setUserTasks
docs: app.setUserTasks
docs: Add "Desktop environment integration"
docs: Add notes on Unity launcher