Fprules

- You can now use several double wildcards in the source pattern, as in `glob`. Fixes [9](https://github.com/smarie/python-fprules/issues/9)

- packaging improvements: set the "universal wheel" flag to 1, and cleaned up the `setup.py`. In particular removed dependency to `six` for setup and added `py.typed` file, as well as set the `zip_safe` flag to False. Removed tests folder from package. Fixes [8](https://github.com/smarie/python-fprules/issues/8)

Added `pyproject.toml`.

Dependency `makefun` was not correctly declared into `setup.py`. Fixes [6](https://github.com/smarie/python-fprules/issues/6).

`file_pattern` now returns a generator. Fixed [1](https://github.com/smarie/python-fprules/issues/1).

Improved `__repr__` of `FileItem`. Fixes [3](https://github.com/smarie/python-fprules/issues/2)

New `names` parameter to improve configurability. Fixed [2](https://github.com/smarie/python-fprules/issues/2).

First version extracted from `doit` pull request [328](https://github.com/pydoit/doit/pull/328).