manual hinting fix for ttfautohint exclamation point U+0021 at 14 (#299)

postbuild_processing/tt-hinting/Hack-Bold-TA.txt

@@ -4,3 +4,6 @@
 # [ U+006A] adjust point above lowercase j
 # j  touch 0,1, 4,5, 6,7, 10,11  y 1  @  6, 7, 15, 16, 21, 22
 
+# U+0021 exclam glyph ID 580
+uni0021 touch 22,23,24,25    y -0.5    @14
+