reacTIVision 1.5.1
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* revert FrameEqualizer to equalization rather than subtraction
* fixed the calibration distortion for wide camera formats
* correctly save updated camera configuration on exit
* implemented camera format enumeration on Windows
* added a dedicated PS3 camera driver on MacOSX (thanks to Sebestyén Gábor)
* implemented GAMMA and POWERLINE camera configuration on MaxOSX
* implemented CONTRAST camera configuration on Windows
* implemented V4L2_PIX_FMT_GREY in Video4Linux2 (for SUR40)
* implemented STEPWISE camera formats in Video4Linux2 (for raspicam)
* improved SDL event handling and adaptive VSync (for higher fps)
* updated the SDL2 Framework to 2.0.4
* code sign MacOSX application bundle
* minimum supported MacOSX version is 10.8
  32bit version for older systems and CPUs
* add Windows 64bit build (min. Windows 7)
  32bit version for older systems and CPUs

reacTIVision 1.5
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* new AVFoundation camera driver for MacOS X (including controls)
* new videoInput camera driver for Windows (including controls)
* improved Video4Linux2 camera driver for Linux (including controls)
* list all available cameras and formats (via -l startup argument)
* support MJPEG decompression for higher USB camera frame rates 
* support IIDC-over-USB cameras through libdc1394
* added frame cropping configuration (xoffset,yoffset,xwidth,yheight)
* multithreaded thresholder for reduced latency on multicore CPUs
* allow the adjustment of the threshold tile size
* updated FrameEqualizer for faster background subtracion 
* sending correct TUIO 1.1 source messages
* added a quicker and less tedious calibration mode
* migrated the user interface to SDL 2.0 (less CPU overhead)
* fixed a MIDI configuration file location bug on MacOS X
* added fullscreen toggle (via F1 key)
* added a headless mode (via -n startup argument)
* improved Linux desktop integration
* updated oscpack, tinyxml, portmidi and dc1394 libraries
* added x86_64 and dropped PPC architecture on MacOS X
* provide x86_64 and i686 binaries for Mac OS X and Linux
* updated XCode and Visual Studio 2012 projects
* added a project for the Codeblocks IDE on Linux
* removed the dtouch fiducial tracker
* removed the now outdated VdigGrab, DSVideolib and Video4Linux drivers
* new application icon
