41. Rails 5.0
• Action Cable
• Rails API
• Active Record Attributes API
• Test Runner
• Exclusive use of rails CLI over Rake
• Sprockets 3
• Turbolinks 5
• Ruby 2.2.2+ required
43. Rails 5.1
• Yarn Support
• Optional Webpack support
• jQuery no longer a default dependency
• System tests
• Encrypted secrets
• Parameterized mailers
• Direct & resolved routes
• Unification of formfor and formtag into form_with