Update for Ruby 3.0 about attr_masker

[skalee]

Looks like all the warnings come from two sources:

– Rails 6, which is independent from us.
– Tests, in which given custom masker expects keyword arguments whereas a regular hash is passed.

Regarding the latter, I need to make a careful decision whether custom maskers should accept hashes or keyword arguments. For now, I am leaning towards the second option.

[skalee]

For the record, according to current plans Ruby 3.0 is due in about eleven months, though they may release Ruby 2.8 instead — https://bugs.ruby-lang.org/projects/ruby-master/roadmap.

[skalee]

Looks like build errors come from the latest Rails release, which is not compatible with Ruby HEAD.

[skalee]

I'm closing this one as it's not very relevant yet. We can reopen it when Ruby 3 reaches beta stage.

Regarding other issues which were mentioned in the discussion:

• Rails warnings have been suppressed (#85, #105)
• Maskers now accept keyword arguments (#91)