setting logical_asset_filter configuration crashed under 0.9.8 and Rails 4.2.1

[gtd]

I am in the process of upgrade an app from Rails 3.2 to 4.2. My jquery-rails is locked to 0.9.5 and loading works. If I update to 0.9.8, then I get the following error:

/Users/gtd/repo/config/application.rb:160:in `<class:Application>': undefined method `+' for #<Mubi::Application:0x007fc9335940f8> (NoMethodError)

This corresponds to this line in application.rb:

config.requirejs.logical_asset_filter += [/\.hbs$/]

[jezstephens]

Duplicate of #229

[carsomyr]

@gtd See previous issue.