Consider pruning gen_ascii_chars

[eternaleye]

It seems to only be used in tests of its functionality, and is a bit specific for a method on every RNG.

[nagisa]

It has a default implementation so you’re free to ignore it even if you’re implementing your own random number generator.

[eternaleye]

Sure, but it's a highly purpose-specific call, with a misleading name (it generates A-Za-z0-9, not any ASCII), on a very general type.

[SimonSapin]

I was about to file a new issue, but this will do. I saw gen_ascii_chars mentioned on reddit and expected it to generate in the U+0000 to U+007F range. It turns out it doesn’t.

If this is not removed, it should be renamed to gen_ascii_alphanumeric or gen_ascii_alphanumeric_chars. ("Alphanumeric" in one word is already used in char::is_alphanumeric.)

[psyomn]

I can do the above change if someone agrees.

If we do agree, should we leave both functions for now (rea, and a proxy renamed method), where the older depracated one will print an annoying message to the user? Maybe relevant linky.

[pitdicker]

With #279 gen_ascii_chars is now deprecated and replaced with an Alphanumeric distribution.