Free rwpng images inside rwpng.h
Mark static schedule for OpenMP where appropriate
Ensure 1-file chunks when using file-based parallelism
Added OpenMP to LCMS code
Use LCMS cache when a single thread is used
Try to avoid OpenMP overhead
Preserve unknown chunks
SSE3 -> SSE2

mini commit
PNG_COLOR_MASK_COLOR

The commented out code is obsolete now anyway.
This is also to have consistency with a forthcoming lcms addition.
use gAMA and cHRM to build RGB profile

add lcms status to verbose output
minor changes to gamma verbose output
Workaround for saving chunks in old libpng versions

Fixes #37
mention output option
Merge pull request #82 from toy/mention-output-option

Mention output option
Use log to give more information about invalid uses of the library
make openmp work with icc
Braces
Fix MSC version in the manual
MSVC-compatible inline
MSVC-compatible SSE2
Acknowledge Visual Studio 2013 supports C99