4 - Instead of forming clusters immediately, only do it if we are reversing
5 the text. We'd need a separate bit to indicate cluster start then.
7 - Right now, BTW, for non-native direction runs, we get the cluster wrong...
8 Should do min(input-glyphs.cluster)
10 - Fix tt kern on/off and GPOS interaction
12 API issues to fix before 1.0:
13 ============================
15 - Figure out how many .so objects, how to link, etc
21 - Add glib GBoxedType stuff and introspection
24 API to add (maybe after 1.0):
25 ============================
27 - BCP 47 language handling / API (language_matches?)
29 - Add hb_face_get_glyph_count()?
31 - Add hb_font_create_linear()?
33 - Add hb_shape_plan()/hb_shape_execute()
35 - Add query API for aalt-like features?
37 - SFNT api? get_num_faces? get_table_tags? (there's something in stash)
39 - Full matrix instead of scale?
41 - Add segmentation API
50 - Add --width, --height, --auto-size, --align, etc?
51 - Port to GOption, --help
52 - Add XML and JSON formats
58 - ot-layout enumeration API (needs font)
64 - Avoid allocating blob objects internally for for_data() faces?
66 - Add caching layer to hb-ft