Files that should be generated by rmtoo need to be created manually

[dav1d-wright]

Hello,

first of all thank you very much for putting up the effort of writing this tool, for free!

I have just installed everything and after initial issues I seem to be able to build the example project.

However there are two things that I had to hack in the makefile for which I don't understand why:
The files .rmtoo_dependencies and stats_reqs_cnt.csv should be generated by the tool itself, but they are not there when they are needed in the example project's makefile. Could it be possible that something is in the wrong order?

Best,
David