This is a bugfix update that addresses a number of security, stability and performance issues:
- Deal with bogus Turktrust certs MFSA 2013-20
- Several memory security hazards fixed MFSA 2013-01
- Updated OTS library to r95 to fix potential font-related exploits
- Security fix for libpixman stack buffer overflow
- Fix for certain types of input lag on Twitter/Facebook & other sites with unnecessary DOM invalidations
- Fix for HTTP pipelining re-use (improve pipelining logic)
- Performance&stability updates to cairo and direct2d back-end
- Improved performance for repeat gradients