Add exact plus, minus, or plus-or-minus sign to TZ display.
Fix toggle of Gregorian/lunar.
Fix (mostly) animation of hands when calendar-mode changes.
Fix (completely) animation of hands when calendar-mode changes.
Change dial-markings if needed w/ calendar change.
Forgot to save changes on other open files.
Merge branch 'master' into deployment
Re-enable 'calendar' button.