- update to 2.12:
* Added build system for fast-float plugin (see plugin documentation)
* Added new build-in sigmoidal tone curve
* Added XCode 12 project
* Added support for multichannel input up to 15 channels
* Fix LUT8 write matrix
* Fix version mess on 10/11
* Fix tools & samples xgetopt
* Fix warnings on different function pointers
* Fix matlab MEX compilation
* plugin: cleanup and better SSE detection
* plugin: add lab to any on float
* plugin: it can now be compiled as C++
* recover PDF documentation, but try to keep it under a resonable size.
* Prevent a rare but possible out-of-bounds read in postscript generator
* Fix some compiler warnings
* Add named color profile building sample to testbed