* 🧑‍💻 Default to No DEBUG=true

* 👷 Setup Appraisal

* 👷 Attempt to use custom RuboCop version

* 👷 Unspecify rubygems version for old Ruby + Rails combos

* 👷 Remove rubygems version for old Ruby + Rails combos

* 👷 Specify old bundler version for old Ruby + Rails combos

* 👷 Experimental true for finicky bundler/rubygems combos

* 🚨 Lint lock

* 👷 RAILS_VERSION

* 👷 RAILS_MAJOR_MINOR

* 👷 Ancient Rails Support

* 👷 Fix names

* 💚 Fix test

* 💚 Fix test

* 💚 Fix tests

* 💚 Fix env variables

* 💚 Fix env variables

* 💚 Fix rdoc version

* 💚 Allow JSON Version for Rails 4 support

* 💚 consolidate on matrix.rails

* ✨ Combustion Test Rails App

* ✨ Combustion Testing

* 👷 Combustion Testing

* 💚 Fix dependency version pins

* 💚 Fix code coverage

* 🔨 Regenerate Appraisals

* ➖ Min branch cov = 72%

* 🔧 Fix path to gemspec

* ➖ rspec-rails

* ➖ actionpack

* ✅ Add back Rails 3.0-, 3.1, 3.2

* 📌 rake v10 for ancient Appraisals

* 📌 tzinfo v1 for ancient Rails

* 📌 delivery_method :test for Rails 3

* 📌 undefined method `unparsed_value' for #<Mail::OptionalField> on Rails 3

* 📌 branch coverage @ 71%

* 📌 undefined method `unparsed_value' for #<Mail::OptionalField> on Rails 3

* 💚 Fix test on Rails 3

* 💚 Fix typo

* 🚨 Lint lock

* 👷 Turn off experimental CI flags

* 👷 prefer block_is_expected

* 🔥 Remove bogus comment

* 🔥 Remove bogus comments

* 📝 Improve documentation

* 🚨 Disable RSpec/ExampleLength

* 📝 Documentation

* 🔧 89% coverage

* 🔖 Prepare release v2.0.6

* 🚨 Lint lock

* 📝 Improved documentation