Won't work with Rails 6.1

[Fodoj]

I gave it a try on Rails 6.1 RC and figured that due to this change: https://github.com/rails/rails/commit/437ab2031ea4660cb4e57dea3d912aca37363c7e, routing-filter gem won't work anymore. Sadly I don't have capacity to submit a PR, but at least this files need to be updated to support new object types (though most likely then it will break suppor for Rails <6.1):

• lib/routing_filter/filter.rb
• lib/routing_filter/adapters/rails.r

[hasghari]

@svenfuchs ~~I have a working solution for Rails 6.1 but before I create a PR for it, I wanted to see whether you're ok with making the following changes:~~

1. ~~Release a new version (0.6.4) with the gemspec updated to restrict the rails version to '>= 4.2', '< 6.1'~~
2. ~~Cut a new branch for Rails 6.1 with updated gemspec >= 6.1 and release a new version (1.0.0) to reflect backwards incompatibility.~~

Update: PR #76 supports Rails 6.1 and maintains backwards compatibility.

[geoffharcourt]

#76 has been merged, I think we just need a new gem release!

[adsteel]

Thanks so much for #76! Looking forward to the new release.

[techvineet]

When will the new version with #76 release?

[kennyadsl]

Hey, thanks for merging #76! Anything I can do to help releasing a new version?