Log Message:
Update to 2.30.

upstream changelog:

== Changes from 2.29 to 2.30 ==

* added U+0462-U+0463 to Mono
* corrected U+1E53 in Serif
* added U+1E4C-U+1E4D to Mono and Serif
* added U+1E78-U+1E79 to Mono
* fixed missing diacritics in Latin Extended Additional in Sans ExtraLight
  (moved stacked diacritics out of PUA in the process)
* fixed anchors on U+1E78 in Serif
* added U+1DC4-U+1DC9 to Serif
* renamed above-mark to above-mark in Serif-Italic
* added U+1DC4-U+1DC9 to context class for dotless substitution
* changed Doubleacute to Doublegrave in Sans ExtraLight
* removed redundant reference in U+01FB in Sans Oblique
* added U+A726-U+A727 to Mono
* changed U+04BE and U+04BF according to recommedations of Sasha Ankwab in Sans
* remove "Symbol Charset" from set of codepages in Sans