Log message:
Updated harfbuzz to 1.3.3.

Overview of changes leading to 1.3.3
Wednesday, September 28, 2016
====================================

- Implement parsing of OpenType MATH table.
New API:
HB_OT_TAG_MATH
HB_OT_MATH_SCRIPT
hb_ot_math_constant_t
hb_ot_math_kern_t
hb_ot_math_glyph_variant_t
hb_ot_math_glyph_part_flags_t
hb_ot_math_glyph_part_t
hb_ot_math_has_data
hb_ot_math_get_constant
hb_ot_math_get_glyph_italics_correction
hb_ot_math_get_glyph_top_accent_attachment
hb_ot_math_get_glyph_kerning
hb_ot_math_is_glyph_extended_shape
hb_ot_math_get_glyph_variants
hb_ot_math_get_min_connector_overlap
hb_ot_math_get_glyph_assembly

Log message:
Updated harfbuzz to 1.3.2.

Overview of changes leading to 1.3.2
Wednesday, September 27, 2016
====================================

- Fix build of hb-coretext on older OS X versions.

Log message:
Fix build on older Darwin.

Log message:
Updated harfbuzz to 1.3.1.

Overview of changes leading to 1.3.1
Wednesday, September 7, 2016
====================================

- Blacklist bad GDEF of more fonts (Padauk).
- More CoreText backend crash fixes with OS X 10.9.5.
- Misc fixes.

Log message:
Updated harfbuzz to 1.3.0.

Overview of changes leading to 1.3.0
Thursday, July 21, 2016
====================================

- Update to Unicode 9.0.0
- Move Javanese from Indic shaper to Universal Shaping Engine.
- Allow MultipleSubst to delete a glyph (matching Windows engine).
- Update Universal Shaping Engine to latest draft from Microsoft.
- DirectWrite backend improvements.  Note: this backend is for testing ONLY.
- CoreText backend improvements with unreachable fonts.
- Implement symbol fonts (cmap 3.0.0) in hb-ft and hb-ot-font.
- Blacklist bad GDEF of more fonts (Tahoma & others).
- Misc fixes.

Log message:
Updated harfbuzz to 1.2.7.

Overview of changes leading to 1.2.7
Monday, May 2, 2016
====================================

- Blacklist another version of Times New Roman (Bold) Italic from Windows 7.
- Fix Mongolian Free Variation Selectors shaping with certain fonts.
- Fix Tibetan shorthand contractions shaping.
- Improved list of language tag mappings.
- Unbreak build on Windows CE.
- Make 'glyf' table loading lazy in hb-ot-font.

Log message:
Recursive revbump from textproc/icu 57.1

Log message:
Update harfbuzz to 1.2.6

Friday, April 8, 2016
====================================

- Blacklist GDEF table of another set of Times New Roman (Bold) Italic.
- DirectWrite backend improvements.  Note: DirectWrite backend is
  exclusively for our internal testing and should NOT be used in any
  production system whatsoever.

Log message:
Update harfbuzz to 1.2.5

Overview of changes leading to 1.2.5
Monday, April 4, 2016
====================================

- Fix GDEF mark-filtering-set, which was broken in 1.2.3.

Overview of changes leading to 1.2.4
Thursday, March 17, 2016
====================================

- Synthesize GDEF glyph class for any glyph that does not have one in GDEF.
  I really hope we don't discover broken fonts that shape badly with this
  change.
- Misc build and other minor fixes.
- API changes:
  - Added HB_NDEBUG.  It's fine for production systems to define this to
    disable high-overhead debugging checks.  However, I also reduced the
    overhead of those checks, so it's a non-issue right now.  You can
    forget it.  Just not defining anything at all is fine.

Log message:
Update harfbuzz to 1.2.3.

Overview of changes leading to 1.2.3
Thursday, February 25, 2016
====================================

- Blacklist GDEF table of certain versions of Times New Roman (Bold) Italic,
  due to bug in glyph class of ASCII double-quote character.  This should
  address "regression" introduced in 1.2.0 when we switched mark zeroing
  in most shapers from BY_UNICODE_LATE to BY_GDEF_LATE.
  This fourth release in a week should finally stablize things...

- hb-ot-font's get_glyph() implementation saw some optimizations.  Though,
  might be really hard to measure in real-world situations.

- Also, two rather small API changes:

We now disable some time-consuming internal bookkeeping if built with NDEBUG
defined.  This is a first time that we use NDEBUG to disable debug code.  If
there exist production systems that do NOT want to enable NDEBUG, please let
me know and I'll add HB_NDEBUG.

Added get_nominal_glyph() and get_variation_glyph() instead of get_glyph()

New API:
- hb_font_get_nominal_glyph_func_t
- hb_font_get_variation_glyph_func_t
- hb_font_funcs_set_nominal_glyph_func()
- hb_font_funcs_set_variation_glyph_func()
- hb_font_get_nominal_glyph()
- hb_font_get_variation_glyph()

Deprecated API:
- hb_font_get_glyph_func_t
- hb_font_funcs_set_glyph_func()

Clients that implement their own font-funcs are encouraged to replace
their get_glyph() implementation with a get_nominal_glyph() and
get_variation_glyph() pair.  The variation version can assume that
variation_selector argument is not zero.  Old (deprecated) functions
will continue working indefinitely using internal gymnastics; it is
just more efficient to use the new functions.

Overview of changes leading to 1.2.2
Wednesday, February 24, 2016
====================================

- Fix regression with mark positioning with fonts that have
  non-zero mark advances.  This was introduced in 1.2.0 while
  trying to make mark and cursive attachments to work together.
  I have partially reverted that, so this version is much more
  like what we had before.  All clients who updated to 1.2.0
  should update to this version.

Overview of changes leading to 1.2.1
Tuesday, February 23, 2016
====================================

- CoreText: Fix bug with wrong scale if font scale was changed later.
  https://github.com/libass/libass/issues/212
- CoreText: Drastically speed up font initialization.
- CoreText: Fix tiny leak.
- Group ZWJ/ZWNJ with previous syllable under cluster-level=0.
  https://github.com/behdad/harfbuzz/issues/217
- Add test/shaping/README.md about how to add tests to the suite.