Support OpenType 'BASE' table
Submitted by Krasnaya Ploshchad’
Link to original bug (#786933)
Description
The OpenType 'BASE' table provides information used to align glyphs of different scripts and sizes in a line of text, whether the glyphs are in the same font or in different fonts. With this table Pango can making any scripts proposed aligning in a line, especially if font including this table.
An example is available here: http://tavmjong.free.fr/blog/wp-content/uploads/SYDNEY_2016/AlignIntroB-2FS.gif