Log Message:
Changes in 3.3.4
2012-05-31

- Bug fixes / improvements
    - Do not abort on NaN overlay input (#530)
    - Reduce CommonBitsRemover harmful effects during overlay op (#527)
    - Better cross-compiler support (#534)
    - Enable overlay ops short-circuits (#542)
    - Envelope-based short-circuit for symDifference (#543)
    - Fix support for PHP 5.4 (#513)
    - Fix TopologyPreservingSimplifier invalid output on closed line (#508)
    - Reduce calls to ptNotInList, greatly speeding up Polygonizer (#545)

Changes in 3.3.3
2012-04-01

- Bug fixes / improvements
    - Fix simplification of collections with empty items (#519)
    - Fix MSVC compilation of ambiguous log() call (#506)
    - Fix CMake issues with std:: namespace detection (#493)