testing files needed to improve our support of third-party file formats like .mpp

[Nozzit]

Hi everyone, I am currently hard at work implementing the requested file formats in issue #17.
To make sure we implement these file formats in the right way, we need testing files. There are not many of those on the internet and almost none of them are high quality.
That's why we need your help, do you work regularly with the file formats mentioned in issue #17? Then maybe you could send some of those files over and help improve our support for them, the bigger and more feature rich the files are, the better.
It would also help greatly if we could get access to some of these programs which write these file formats ourselves, that would mean we could not only read those files, but in the case of MS project, we would also be able to write them.
Thank you in advance :-)