Allow umlauts in passwords

[pencil]

Fixes the following error:

Encoding::CompatibilityError: incompatible character encodings: ASCII-8BIT and UTF-8

[pencil]

Added. And moved it to the valid? method to fix the error for SHA as well.

[mogest]

Thanks. I'll merge this, but I'm going to make a change to how it's done:

if password.respond_to?(:encode)
  password = password.encode("UTF-8")
  password.force_encoding("ASCII-8BIT")
end

so that non-UTF8 strings get converted to UTF-8 first. force_encoding updates the string itself, too, so having that copy there means the caller doesn't get their string changed on them.

Thanks again!

[pencil]

Thank you :+1: