v2.2.0

• Optimised query syntax to use PostgreSQL GIN indices (thanks @BenTalagan)
  Please add GIN indices to you tag columns where it is necessary (e.g. if you usually search your models by tag)

class AddIndices < ActiveRecord::Migration[5.0]
  def change
    add_index :users, :tags, using: 'gin'
  end
end

• Dropped support for Rails < 5.2
• Switched to GitHub Actions