Small is seen as a type with some options so this fixes the errors starting with:
code\PostProcessing\ComputeUVMappingProcess.cpp(125): error C2632: 'int' followed by 'char' is illegal
Changed copyright end year to 2020 in every reference "Copyright (c) 2006-XXXX, assimp team".
Changed copyright end year to 2020 in every reference "Copyright (c) 2006-XXXX, ASSIMP Development Team".
Changed copyright end year to 2020 in LICENCE.rtf.
Changed copyright end year in CMakeFiles.txt files and any other places referencing Assimp with a copyright start and end year.