Please consider adding PyPy Trove classifiers, because apparently black works fine! At least on the recent PyPy (I tested PyPy3.6 v7.0 on macOS). I used version 18.9b0 of black. See https://pypy.org/download.html

rustfmt 1.x ran in "recursive" mode by default wherein all the mods within the AST would be visited and formatted, including those mods defined in external files not explicitly passed as args to rustfmt.

rustfmt 2.x inverts that behavior and will now only format files explicitly passed to rustfmt unless the --recursive flag is passed (in which case rustfmt 2.x formats everything like rus

When I try to beautify the i get the following problem
TypeError: Cannot read property 'on' of undefined

I just installed beautify and uncrustify

https://gist.github.com/ODCA117/917affd6b11437517535a45350379820

I really don't know if we have some rules to create Mercosul/Brazilian license plate, but I think that we should keep support for both (after 2024 we can drop Brazilian support since Brazil will only use Mercosul format).