Deprecation warnings, non-compatibility with python 3.12, libpng12.so.0

[StrohD]

Hello!

I tried running rgt-THOR on my data. Unfortunately, the it is not compatible with python 3.12, as the numpy dependency removed some necessary functions. Also i get quite some deprecation warnings when running it. rgt-THOR also depends on libpng12.so.0, which is not available for Ubuntu versions 16.10+. This makes the tool difficult/impossible to use with up to date software.