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.
Moved IOSystem Unzip functionality out of D3MF Importer into include/assimp
Cleaned up and more efficient:
Don't map the archive until the caller opens a file or requests the contents list
Don't extract any files until they are opened
Store the location of the data within the ZIP and extract it later if the file is opened.
Kim Kulling
Marc-Antoine Lortie
RichardTea
Rahul Sheth