* PEP 545: FIX typo.
* PEP 545: Grammar tweaks from Brett Cannon.
* PEP 545: Adding the Hugarian group in known groups.
* PEP 545: FIX typos, thanks to Jakub Wilk.
* PEP 545: Clarify the false equality between language codes and country codes.
* PEP545: Update licensing after discussion with Van. L from the PSF.