Just curious if we do need the licence in all files or in the repo root is enough?

Its fine to remove the deprecated folder. It was just a list of old examples that were developed but I replaced them in the examples folder. Some of them don't work. I was just keeping them for reference. Everything outside the deprecated folder should be up to date.

@AndreMiras you're right. I removed the license text from py source files.

@JohnSumskas I removed the _depreciated folder from examples, fixes urdf loader example and simplifies and cleaned up urdf and stl loader examples.

Nice that you're giving it some love, it looks promising ❤️
You realise the PR is so big it makes it hard to really review? 😅
My suggestion would be, address two-three simple concerns per PR or only one concern if it's more complex. That makes it less likely to overlook something and introduce regressions.
For instance:

• one PR that simply drops examples/_depreciated and does only that
• one PR that only deals with license clean up
• one PR per examples/*/main.py clean up that explains what's being done and why it's needed

It's only a suggestion and I'm not maintaining this project. It feels overkill and extra work, but actually it's a strategy to get things done. For instance even though my knowledge on this project is very limited, it's still likely that I try to understand and approve/merge something as trivial as deleting a folder called _depreciated/. So that would be one step further toward getting the big task done