Fix rubocop errors

.rubocop.yml

@@ -15,6 +15,14 @@ Encoding:
 LineLength:
   Max: 120
 
+Metrics/BlockLength:
+  Exclude:
+    - 'spec/**/*'
+
+Style/MixinUsage:
+  Exclude:
+    - 'spec/spec_helper.rb'
+
 # Avoid methods longer than 10 lines of code
 MethodLength:
   CountComments: false  # count full line comments?

Gemfile

 # frozen_string_literal: true
+
 source 'https://rubygems.org'
 gemspec
 

lib/fizzy-api.rb

 # frozen_string_literal: true
+
 require 'fizzy/api'

lib/fizzy/api.rb

 # frozen_string_literal: true
+
 require 'active_interaction'
 require 'fizzy/api/version'
 require 'fizzy/api/sessions'

lib/fizzy/api/endpoints.rb

 # frozen_string_literal: true
+
 require 'fizzy/api/endpoints/endpoint'
 require 'fizzy/api/endpoints/calculate_outcome'
 require 'fizzy/api/endpoints/render_graph'

lib/fizzy/api/endpoints/calculate_outcome.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Endpoints

lib/fizzy/api/endpoints/endpoint.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Endpoints

lib/fizzy/api/endpoints/render_graph.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Endpoints

lib/fizzy/api/endpoints/render_graph_synchronous.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Endpoints

lib/fizzy/api/endpoints/render_overview.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Endpoints

lib/fizzy/api/errors.rb

 # frozen_string_literal: true
+
 require 'fizzy/api/errors/graph_not_found_error'
 require 'fizzy/api/errors/outcome_not_available_error'
 require 'fizzy/api/errors/too_few_measurements_error'

lib/fizzy/api/errors/graph_not_found_error.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Errors

lib/fizzy/api/errors/method_not_allowed_error.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Errors

lib/fizzy/api/errors/outcome_not_available_error.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Errors

lib/fizzy/api/errors/too_few_measurements_error.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Errors

lib/fizzy/api/errors/unexpected_status_error.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Errors

lib/fizzy/api/sessions.rb

 # frozen_string_literal: true
+
 require 'httparty'
 require 'fizzy/api/sessions/basic_auth_session'
 

lib/fizzy/api/sessions/basic_auth_session.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     module Sessions

lib/fizzy/api/version.rb

 # frozen_string_literal: true
+
 module Fizzy
   module Api
     VERSION = '0.1.4'

spec/factories/basic_auth_session.rb

 # frozen_string_literal: true
+
 FactoryBot.define do
   factory :basic_auth_session do
     initialize_with { new(username: 'some_username', password: 'some_password', fizzy_url: 'http://fizzy.dev') }