Overview of changes between 1.8.1 and 1.8.2
===========================================
* Add Khmer support [Jens Herden, Javier Sola]
* Fix bugs and crashes in the operation of PangoLayoutIter [Amit Aronovitch]
* Increase sharing of data between different copies of Pango
  [Tommi Komulainen, Ross Burton]
* Remove dependence of opentype code on FreeType internals [David Turner,
  Behdad Esfahbod]
* Cache metrics for the Win32 backend [Tor Lillqvist]
* Improve handling of RTL text when passing it to Uniscribe [Tor]
* Support for TrueType fonts on Win32 with characters outside the BMP [Tor]
* Handle alpha in XftColors again. [Mikael Magnusson]
* Better handling of MacThai encoded fonts [Theppitak Karoonboonyanan]
* Handle zero width chars properly in Hangul backend 
  [Young-Ho Cha, Changwoo Ryu]
* Fix Oriya character classification [Gora Mohanty, Gautam Sengupta]
* PangoAttrIterator bug fixes [Morten Welinder]
* Clean up copyright/licensing information [William N. Ray]
* Misc bug and build fixes [Sebastien Bacher, Brandon Bergren,
  Chris Blizzard, Paolo Borelli, Behdad, Harshula, Alex Jones, Aivars Kalvans, 
  Stepan Kasal,  Karel Kulhavy, Ryan Lortie, Ben Maurer, Sukhjinder Sidhu, 
  Manish Singh, Emil Soleyman-Zomalan, Morten]

Overview of changes between 1.8.0 and 1.8.1