4 - Fix feature mask bugs
8 - Remove hb_internal_glyph_info_t, etc
10 - Remove synthesized GDEF
12 - Remove fixed-size feature/lookup arrays in hb-ot-map
14 - Use size_t in sanitize
17 API issues to fix before 1.0:
18 ============================
20 - Sprinkle const all over public and private API
22 - Rename get_table to reference_table
24 - get_table shouldn't return NULL
26 - Use tags for hb_script_t?
28 - Future-proof metrics struct
30 - Figure out how many .so objects, how to link, etc
33 API to add (maybe after 1.0):
34 ============================
36 - Add hb_font_create_linear()?
38 - Add hb_shape_plan()/hb_shape_execute()
42 - Add query API for aalt-like features?
44 - SFNT api? get_num_faces?
46 - Full matrix instead of scale?
48 - Add hb-glib / hb-icu script conversion API
50 - Add segmentation API
60 - GNOME Bug 612402 - (hb-arm) HarfBuzz compilation fix for arm
62 - Better define HB_INTERNAL
68 - Avoid allocating blob objects internally for for_data() faces
70 - Add caching layer to hb-ft