Overview of changes between 1.22.0 and 1.22.1
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- Fix crasher when freeing PangoLayoutIter's
- Fix loading of bogus OpenType anchor tables
- Fix OpenType CursiveChain positioning
- Misc bug fixes
- Bugs fixed in this release:
	Bug 528272 – "Error loading GPOS table 5503" when using katakana
		characters
	Bug 552107 – Small libtool fixes
		Patch by Patryk Zawadzki
	Bug 539623 – document that pango_color_parse accepts NULL
	Bug 555219 – Memory leak when using pango_layout_iter_copy
		Patch from Falk Rohsiepe
	Bug 553345 – Japanese pangram.
		Patch from  Takeshi AIHANA