Changes of version 15.1.0

• Add Characters
  • MODIFIER LETTER YIN DEPARTING TONE MARK (U+02EA);
  • MODIFIER LETTER YANG DEPARTING TONE MARK (U+02EB);
  • MODIFIER LETTER DOUBLE APOSTROPHE (U+02EE);
  • MODIFIER LETTER MIDDLE GRAVE ACCENT (U+02F4);
  • MODIFIER LETTER MIDDLE DOUBLE GRAVE ACCENT (U+02F5);
  • MODIFIER LETTER MIDDLE DOUBLE ACUTE ACCENT (U+02F6);
  • MODIFIER LETTER RAISED COLON (U+02F8);
  • MODIFIER LETTER BEGIN HIGH TONE (U+02F9);
  • MODIFIER LETTER END HIGH TONE (U+02FA);
  • MODIFIER LETTER BEGIN LOW TONE (U+02FB);
  • MODIFIER LETTER END LOW TONE (U+02FC);
  • MODIFIER LETTER SHELF (U+02FD);
  • MODIFIER LETTER OPEN SHELF (U+02FE);
  • MODIFIER LETTER LOW LEFT ARROW (U+02FF);
  • COMBINING LEFT ARROW BELOW (U+20EE);
  • COMBINING RIGHT ARROW BELOW (U+20EF);