v3.0.0.beta1

Breaking changes:

• Dropped support for Rails 4.2
• Dropped support for Ruby 2.2

Enhancements:

• Komponent now reports component stats when you run bin/rails stats
• Komponent now includes a styleguide engine that you can mount to your project
  to document your components, and 2 new generators:
  • rails g komponent:styleguide to set it up
  • rails g komponent:examples to generate an examples file for each existing component

Bug fixes:

• Removed redundant class attribute in HAML templates
• Fix content_for / yield which was no longer working across components, since v2.0.0
• Fix translation key lookup in partials (helper method t)