Release 1.4.15 (24 Nov 2014 -- compared to 1.4.14)

• OpenEXR: fix botched writing of subimage name.
• 'oiiotool --help' now says explicitly if it was built without OpenColorIO enabled.
• Python read_scanlines() did not honor the channel subset.
• RAW file reading: the open-with-config variety had the wrong function signature, and therefore did not properly override the base class, causing configuration hints to be ignored.
• Bug fix in Python ImageInput: could crash if calling ImageInput.read_* functions without specifying a data format. #998
• Bug fix in Python ImageOutput: could crash if calling ImageInput.write_* functions if the buffer format did not match the file data format. #999
• RAW: Fix bug with "open with config" options. #996 Release 1.4.14 (20 Oct 2014 -- compared to 1.4.13)

• GIF: Fix to make it able to compile against giflib >= 5.1. #975
• JPEG support for reporting and controlling chroma-subsampling value, via the "jpeg:subsampling" attribute. #978

Release 1.4.13 (12 Sep 2014 -- compared to 1.4.12)

• Now builds against OpenEXR 2.2, including support for the new DWAA and DWAB compression modes.
• OpenEXR: fixed issue where a stringvec of 16 items was mishandled as a matrix.
• Fix fmath.h to move the 'using' statements around properly.
• Fix oiiotool color conversion bug that crashed when the input image was a file with MIP levels.
• TIFF output now gracefully handles negative origins without hitting an assertion.
• Developer details: platform macros moved from sysutil.h to platform.h. (But sysutil.h now includes platform.h, so you shouldn't notice.)
• Developer details: ustring now has comparisons between ustrings versus char* and string_view.