2017-2-21 Max Derhak
 * 2.1.7 Release of IccProfLib and related tools
 * 2.1.7 Release of IccLibXML and related tools
 * IccLibXML: Added extensions to CalcElement parsing to support
   Macros, named variables, named sub-lements, naming of input/output
   channels, and importing from IccCalcImport files
 * iccApplyProfiles: Fixed bug in TiffImg.cpp related to parsing 
   Extra Sample count from tiff header
 * IccProfLib: modified CIccCmm::FromInternalEncoding to allow NC0004
   to be matched with CMYK color space
 * Modified IccProflib and profiles to support ColorEncoding Class 
   signature 'cenc' instead of pre-release 'enc3'
   
 2017-11-7 Max Derhak
 * 2.1.8 Release of IccProfLib and related tools
 * 2.1.8 Release of IccLibXML and related tools
 * Syncronization with ICC.2:20107
 * IccProfLib: Added support for 'sign' calc element operator
 * IccProfLib: Added support for Luminance matching PCS adjustement
 * IccProfLib: Completed implementation of BRDF tags and structure
   elements
 * IccProfLib: Various improvements to profile validation and reporting
 * IccProfLib: Cleanup of some type conversion warnings
 * IccApplyNamedCmm: Added option for precision in reporting and option
   for luminance matching
 * IccApplyProfiles: Added option for luminance matching
  