Maybe update files that describe the project

[EndeavourAccuracy]

You could update some files that describe the project. For example, src/COPYING says "All Rights Reserved." which contradicts the MIT license. I'm also interested in reading src/ChangeLog, which - like various other files - currently just says "TODO". Also, it's unclear where to look for the current version number. Wikipedia says "2.1". Two files, inno_setup/executor.iss and src/include/rsys/version.h say "2.1pr16". These are usual locations to look for a version number; it would be easier if the version number was clearly stated in a README or ChangeLog file.