Changes of version 15.2.0

• Add characters:

• FLOWER PUNCTUATION MARK (U+2055);
• VERTICAL FOUR DOTS (U+205E);
• BLACK LEFTWARDS BULLET (U+204C);
• BLACK RIGHTWARDS BULLET (U+204D);
• THREE DOT PUNCTUATION (U+2056);
• FOUR DOT PUNCTUATION (U+2058);
• FIVE DOT PUNCTUATION (U+2059);
• TWO DOT PUNCTUATION (U+205A);
• FOUR DOT MARK (U+205B);

• Shape adjustment of t (#1336).
• Pilcrow signs are adjusted to have fills.