- make use of range for loops
- make use of empty() method for the std::vector
- removed unnecessary std::string initialization
- use ' ' instead of " " for the find methods (should be "faster")
- simplified some function
- make use of emplace_back instead of push_back (should be "faster")
- other small changes
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.
