There is no code related to it.

Creation of language definition file for Ido language.

Cherokee: Adjust base pitch to be higher (seems to effect consonents).

Also removed the pause after each syllable as it no longer seems needed
with the higher base pitch.

Adjusted the tone start/stop values based on Praat pitch analysis
on the newer base pitch.

Add initial support for Pyash languagege, more info:

* https://www.academia.edu/34133204/Pyash_One_Language_to_Unite_Them_All
* https://gitlab.com/liberit/pyac

This reverts commit 6042eb8d1e.

The change causes an issue with `pt-BR` and possibly other languages
and voices.

A new 'hyw' language code has been registered for Western Armenian,
and the arevela and arevmda variant subtags have been deprecated.

This still accepts the hy-arevela and hy-arevmda language tags, but
uses the preferred names for the language files.