Overview of changes between 1.10.0 and 1.10.1
=============================================
- Add various forms of caching to the Win32 backend, greatly
  improving performance [Tor Lillqvist]
- Fix problem with colors leaking from a Pango item to 
  subsequently drawn strings. [Choe Hwanjin]
- Fix bug where error underlines would be drawn 1024 times
  too big in the Cairo backend. [Luis Villa]
- Misc bug and build fixes [Jean Brefort, Matthias Clasen, 
  Behdad Esfahbod, Kazuki Iwamoto]

Overview of changes between 1.9.1 and 1.10.0