unicode_lower_table / unicode_upper_table should be deprecated

[Oreolek]

Modern JS (since circa 2014) has proper String.toLowerCase and String.toUpperCase methods and they are Unicode-aware. Quixe tables are not really Unicode-aware, they fail on non-Latin scripts.

File in question:

quixe/src/glkote/glkapi.js

Line 1297 in a882f4b

var unicode_upper_table = {

[erkyrath]

I am somewhat torn between using the JS facility for Unicode or sticking with my old implementation, which will behave consistently with the C interpreters.