Erubis deprecated in Rails 5.1

[bknarendra]

Template rendering moved to Erubi in Rails master, this generated a depreciation notice in the HAML gem:

DEPRECATION WARNING: ActionView::Template::Handlers::Erubis is deprecated and will be removed from Rails 5.2. Switch to ActionView::Template::Handlers::ERB::Erubi instead.

[mohitnatoo]

To add more context to the above description, the latest version of haml-rails seems to have dependency over haml version < 5.0.
We'd need to make use of haml 5.0 instead.

[sergiotapia]

+1

[k0kubun]

This is already resolved by #128 and haml/haml@7577c18. Use haml-rails 1.0 and haml 5.0.

And if you use :erb filter in Haml on Rails, you may want to use Haml 5.0.1 because of haml/haml#914.

[syguer]

@k0kubun Thanks!