[BRLTTY] Braille in CLDR

[Jason White]

I think most, if not all the benefits could be gained by:

1. A cross-project effort to define a common table format that all would agree
to implement at least at the level of import/export. This format would have as
one of its requirements that the tables be stored as text files, and be easy
to edit.

2. A common repository for tables, maintained as a free software project.