diff --git a/Appraisals b/Appraisals
index f7dc642..1968686 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,21 +1,5 @@
-appraise 'rails-4-2-8' do
- gem "rails", "4.2.8"
-end
-
-appraise 'rails-4-2-9' do
- gem "rails", "4.2.9"
-end
-
-appraise 'rails-5-0-3' do
- gem "rails", "5.0.3"
-end
-
-appraise 'rails-5-0-4' do
- gem "rails", "5.0.4"
-end
-
-appraise 'rails-5-1-2' do
- gem "rails", "5.1.2"
+appraise 'rails-5-1-6-2' do
+ gem "rails", "5.1.6.2"
 end
 
 appraise 'rails-5-2-1' do
diff --git a/Gemfile b/Gemfile
index 625a71d..9d364ab 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,10 +12,6 @@ gemspec
 
 gem 'minitest-ci'   # for CircleCI
 gem 'minitest-focus', group: %i[development test], require: false
-gem 'pry-byebug', group: %i[development test]
-gem 'pry-highlight', group: %i[development test]
-gem 'pry-rails', group: %i[development test]
-gem 'pry-remote', group: %i[development test]
 gem 'pg', '~> 0.18', group: %i[development test]
 gem 'rubocop', require: false
 
diff --git a/Gemfile.lock b/Gemfile.lock
index e037604..6e751b5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,74 +3,73 @@ PATH
   specs:
     squint (1.1.1)
       pg
-      rails (>= 4.2.8)
+      rails (>= 5.1.6.2)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (5.0.4)
-      actionpack (= 5.0.4)
-      nio4r (>= 1.2, < 3.0)
+    actioncable (5.1.7)
+      actionpack (= 5.1.7)
+      nio4r (~> 2.0)
       websocket-driver (~> 0.6.1)
-    actionmailer (5.0.4)
-      actionpack (= 5.0.4)
-      actionview (= 5.0.4)
-      activejob (= 5.0.4)
+    actionmailer (5.1.7)
+      actionpack (= 5.1.7)
+      actionview (= 5.1.7)
+      activejob (= 5.1.7)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (5.0.4)
-      actionview (= 5.0.4)
-      activesupport (= 5.0.4)
+    actionpack (5.1.7)
+      actionview (= 5.1.7)
+      activesupport (= 5.1.7)
       rack (~> 2.0)
-      rack-test (~> 0.6.3)
+      rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.0.4)
-      activesupport (= 5.0.4)
+    actionview (5.1.7)
+      activesupport (= 5.1.7)
       builder (~> 3.1)
-      erubis (~> 2.7.0)
+      erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.0.4)
-      activesupport (= 5.0.4)
+    activejob (5.1.7)
+      activesupport (= 5.1.7)
       globalid (>= 0.3.6)
-    activemodel (5.0.4)
-      activesupport (= 5.0.4)
-    activerecord (5.0.4)
-      activemodel (= 5.0.4)
-      activesupport (= 5.0.4)
-      arel (~> 7.0)
-    activesupport (5.0.4)
+    activemodel (5.1.7)
+      activesupport (= 5.1.7)
+    activerecord (5.1.7)
+      activemodel (= 5.1.7)
+      activesupport (= 5.1.7)
+      arel (~> 8.0)
+    activesupport (5.1.7)
       concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (~> 0.7)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
     appraisal (2.2.0)
       bundler
       rake
       thor (>= 0.14.0)
-    arel (7.1.4)
+    arel (8.0.0)
     ast (2.3.0)
     axiom-types (0.1.1)
       descendants_tracker (~> 0.0.4)
       ice_nine (~> 0.11.0)
       thread_safe (~> 0.3, >= 0.3.1)
-    builder (3.2.3)
-    byebug (9.0.6)
-    coderay (1.1.1)
+    builder (3.2.4)
     coercible (1.0.0)
       descendants_tracker (~> 0.0.1)
     concurrent-ruby (1.0.5)
+    crass (1.0.6)
     descendants_tracker (0.0.4)
       thread_safe (~> 0.3, >= 0.3.1)
     equalizer (0.0.11)
-    erubis (2.7.0)
-    globalid (0.4.0)
+    erubi (1.9.0)
+    globalid (0.4.2)
       activesupport (>= 4.2.0)
-    i18n (0.8.4)
+    i18n (0.8.6)
     ice_nine (0.11.2)
-    json (2.1.0)
-    loofah (2.0.3)
+    loofah (2.2.3)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.6)
       mime-types (>= 1.16, < 4)
@@ -78,60 +77,43 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_portile2 (2.2.0)
-    minitest (5.10.2)
+    mini_portile2 (2.3.0)
+    minitest (5.10.3)
     minitest-ci (3.2.0)
       minitest (>= 5.0.6)
     minitest-focus (1.1.2)
       minitest (>= 4, < 6)
     nio4r (2.1.0)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
+    nokogiri (1.8.5)
+      mini_portile2 (~> 2.3.0)
     parallel (1.11.2)
     parser (2.4.0.0)
       ast (~> 2.2)
     pg (0.21.0)
     powerpack (0.1.1)
-    pry (0.10.4)
-      coderay (~> 1.1.0)
-      method_source (~> 0.8.1)
-      slop (~> 3.4)
-    pry-byebug (3.4.2)
-      byebug (~> 9.0)
-      pry (~> 0.10)
-    pry-highlight (0.1.0)
-      coderay
-      json
-      nokogiri
-      pry
-    pry-rails (0.3.6)
-      pry (>= 0.10.4)
-    pry-remote (0.1.8)
-      pry (~> 0.9)
-      slop (~> 3.0)
-    rack (2.0.3)
+    rack (2.0.9)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (5.0.4)
-      actioncable (= 5.0.4)
-      actionmailer (= 5.0.4)
-      actionpack (= 5.0.4)
-      actionview (= 5.0.4)
-      activejob (= 5.0.4)
-      activemodel (= 5.0.4)
-      activerecord (= 5.0.4)
-      activesupport (= 5.0.4)
-      bundler (>= 1.3.0, < 2.0)
-      railties (= 5.0.4)
+    rails (5.1.7)
+      actioncable (= 5.1.7)
+      actionmailer (= 5.1.7)
+      actionpack (= 5.1.7)
+      actionview (= 5.1.7)
+      activejob (= 5.1.7)
+      activemodel (= 5.1.7)
+      activerecord (= 5.1.7)
+      activesupport (= 5.1.7)
+      bundler (>= 1.3.0)
+      railties (= 5.1.7)
       sprockets-rails (>= 2.0.0)
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
-    railties (5.0.4)
-      actionpack (= 5.0.4)
-      activesupport (= 5.0.4)
+    rails-html-sanitizer (1.0.4)
+      loofah (~> 2.2, >= 2.2.2)
+    railties (5.1.7)
+      actionpack (= 5.1.7)
+      activesupport (= 5.1.7)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
@@ -146,11 +128,10 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.8.1)
-    slop (3.6.0)
-    sprockets (3.7.1)
+    sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    sprockets-rails (3.2.0)
+    sprockets-rails (3.2.2)
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
@@ -159,7 +140,7 @@ GEM
       virtus
     thor (0.19.4)
     thread_safe (0.3.6)
-    tzinfo (1.2.3)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
     unicode-display_width (1.3.0)
     virtus (1.0.5)
@@ -169,7 +150,7 @@ GEM
       equalizer (~> 0.0, >= 0.0.9)
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
+    websocket-extensions (0.1.5)
 
 PLATFORMS
   ruby
@@ -179,13 +160,9 @@ DEPENDENCIES
   minitest-ci
   minitest-focus
   pg (~> 0.18)
-  pry-byebug
-  pry-highlight
-  pry-rails
-  pry-remote
   rubocop
   squint!
   storext
 
 BUNDLED WITH
-   1.17.3
+   2.1.4
diff --git a/circle.yml b/circle.yml
index 3f02932..25c4ea2 100644
--- a/circle.yml
+++ b/circle.yml
@@ -1,24 +1,54 @@
-machine:
-  timezone:
-    America/Chicago
+version: 2.1
 
-dependencies:
-  override:
-    - 'rvm-exec 2.2.2 bundle install'
-    - 'rvm-exec 2.3.4 bundle install'
-    - 'rvm-exec 2.4.1 bundle install'
+orbs:
+  ruby: circleci/ruby@1.1.0
+  node: circleci/node@2
 
-  post:
-    - 'rvm-exec 2.2.2 bundle exec appraisal install'
-    - 'rvm-exec 2.3.4 bundle exec appraisal install'
-    - 'rvm-exec 2.4.1 bundle exec appraisal install'
+jobs:
+  # build:
+  #   docker:
+  #     - image: cimg/ruby:2.7-node
+  #   steps:
+  #     - checkout
+  #     - ruby/install-deps
+  #     - node/install-packages:
+  #       package-mgr: yarn
+  #       cache-key: "yarn.lock"
 
-database:
-  override:
-    - 'rvm-exec 2.3.4 bundle exec appraisal rails-4-2-8 rake --rakefile test/dummy/Rakefile db:setup'
+  test:
+    parallelism: 1
+    docker:
+      - image: cimg/ruby:2.7-node
+      - image: circleci/postgres:9.6-alpine
+        environment:
+          POSTGRES_USER: squint-ruby
+          POSTGRES_DB: squint_test
+          POSTGRES_PASSWORD: ""
+    environment:
+      BUNDLE_JOBS: "1"
+      BUNDLE_RETRY: "3"
+      PGHOST: 127.0.0.1
+      PGUSER: squint-ruby
+      PGPASSWORD: ""
+      RAILS_ENV: test
+    steps:
+      - checkout
+      - ruby/install-deps
+      - run:
+          name: Wait for DB
+          command: dockerize -wait tcp://localhost:5432 -timeout 1m
+      - run: gem install bundler:2.0.2 && bundle version
+      - run: bundle install
+      - run: bundle exec appraisal generate
+      - run: bundle exec appraisal install
+      - run:
+          name: Database setup
+          command: bundle exec appraisal rails-5-1-6-2 rake --rakefile test/dummy/Rakefile db:setup --trace
+      - run: bundle exec appraisal rake
+
+workflows:
+  version: 2
+  test:
+    jobs:
+      - test
 
-test:
-  override:
-    - 'rvm-exec 2.2.2 bundle exec appraisal rake'
-    - 'rvm-exec 2.3.4 bundle exec appraisal rake'
-    - 'rvm-exec 2.4.1 bundle exec appraisal rake'
diff --git a/gemfiles/Rails_4.2.8.gemfile b/gemfiles/Rails_4.2.8.gemfile
deleted file mode 100644
index 79c9859..0000000
--- a/gemfiles/Rails_4.2.8.gemfile
+++ /dev/null
@@ -1,15 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "minitest-ci"
-gem "minitest-focus", group: [:development, :test], require: false
-gem "pry-byebug", group: [:development, :test]
-gem "pry-highlight", group: [:development, :test]
-gem "pry-rails", group: [:development, :test]
-gem "pry-remote", group: [:development, :test]
-gem "rubocop", require: false
-gem "storext"
-gem "rails", "4.2.8"
-
-gemspec path: "../"
diff --git a/gemfiles/Rails_5.0.gemfile b/gemfiles/Rails_5.0.gemfile
deleted file mode 100644
index 0245b4c..0000000
--- a/gemfiles/Rails_5.0.gemfile
+++ /dev/null
@@ -1,15 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "minitest-ci"
-gem "minitest-focus", group: [:development, :test], require: false
-gem "pry-byebug", group: [:development, :test]
-gem "pry-highlight", group: [:development, :test]
-gem "pry-rails", group: [:development, :test]
-gem "pry-remote", group: [:development, :test]
-gem "rubocop", require: false
-gem "storext"
-gem "rails", "5.0.3"
-
-gemspec path: "../"
diff --git a/gemfiles/Rails_5.0.gemfile.lock b/gemfiles/Rails_5.0.gemfile.lock
deleted file mode 100644
index e8dafe6..0000000
--- a/gemfiles/Rails_5.0.gemfile.lock
+++ /dev/null
@@ -1,191 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    squint (0.0.3)
-      pg
-      rails
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    actioncable (5.0.3)
-      actionpack (= 5.0.3)
-      nio4r (>= 1.2, < 3.0)
-      websocket-driver (~> 0.6.1)
-    actionmailer (5.0.3)
-      actionpack (= 5.0.3)
-      actionview (= 5.0.3)
-      activejob (= 5.0.3)
-      mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 2.0)
-    actionpack (5.0.3)
-      actionview (= 5.0.3)
-      activesupport (= 5.0.3)
-      rack (~> 2.0)
-      rack-test (~> 0.6.3)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.0.3)
-      activesupport (= 5.0.3)
-      builder (~> 3.1)
-      erubis (~> 2.7.0)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.0.3)
-      activesupport (= 5.0.3)
-      globalid (>= 0.3.6)
-    activemodel (5.0.3)
-      activesupport (= 5.0.3)
-    activerecord (5.0.3)
-      activemodel (= 5.0.3)
-      activesupport (= 5.0.3)
-      arel (~> 7.0)
-    activesupport (5.0.3)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (~> 0.7)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-    appraisal (2.2.0)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    arel (7.1.4)
-    ast (2.3.0)
-    axiom-types (0.1.1)
-      descendants_tracker (~> 0.0.4)
-      ice_nine (~> 0.11.0)
-      thread_safe (~> 0.3, >= 0.3.1)
-    builder (3.2.3)
-    byebug (9.0.6)
-    coderay (1.1.1)
-    coercible (1.0.0)
-      descendants_tracker (~> 0.0.1)
-    concurrent-ruby (1.0.5)
-    descendants_tracker (0.0.4)
-      thread_safe (~> 0.3, >= 0.3.1)
-    equalizer (0.0.11)
-    erubis (2.7.0)
-    globalid (0.4.0)
-      activesupport (>= 4.2.0)
-    i18n (0.8.4)
-    ice_nine (0.11.2)
-    json (2.1.0)
-    loofah (2.0.3)
-      nokogiri (>= 1.5.9)
-    mail (2.6.6)
-      mime-types (>= 1.16, < 4)
-    method_source (0.8.2)
-    mime-types (3.1)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
-    mini_portile2 (2.2.0)
-    minitest (5.10.2)
-    minitest-ci (3.2.0)
-      minitest (>= 5.0.6)
-    minitest-focus (1.1.2)
-      minitest (>= 4, < 6)
-    nio4r (2.1.0)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
-    parallel (1.11.2)
-    parser (2.4.0.0)
-      ast (~> 2.2)
-    pg (0.21.0)
-    powerpack (0.1.1)
-    pry (0.10.4)
-      coderay (~> 1.1.0)
-      method_source (~> 0.8.1)
-      slop (~> 3.4)
-    pry-byebug (3.4.2)
-      byebug (~> 9.0)
-      pry (~> 0.10)
-    pry-highlight (0.1.0)
-      coderay
-      json
-      nokogiri
-      pry
-    pry-rails (0.3.6)
-      pry (>= 0.10.4)
-    pry-remote (0.1.8)
-      pry (~> 0.9)
-      slop (~> 3.0)
-    rack (2.0.3)
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rails (5.0.3)
-      actioncable (= 5.0.3)
-      actionmailer (= 5.0.3)
-      actionpack (= 5.0.3)
-      actionview (= 5.0.3)
-      activejob (= 5.0.3)
-      activemodel (= 5.0.3)
-      activerecord (= 5.0.3)
-      activesupport (= 5.0.3)
-      bundler (>= 1.3.0, < 2.0)
-      railties (= 5.0.3)
-      sprockets-rails (>= 2.0.0)
-    rails-dom-testing (2.0.3)
-      activesupport (>= 4.2.0)
-      nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.3)
-      loofah (~> 2.0)
-    railties (5.0.3)
-      actionpack (= 5.0.3)
-      activesupport (= 5.0.3)
-      method_source
-      rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
-    rainbow (2.2.2)
-      rake
-    rake (12.0.0)
-    rubocop (0.49.1)
-      parallel (~> 1.10)
-      parser (>= 2.3.3.1, < 3.0)
-      powerpack (~> 0.1)
-      rainbow (>= 1.99.1, < 3.0)
-      ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.0, >= 1.0.1)
-    ruby-progressbar (1.8.1)
-    slop (3.6.0)
-    sprockets (3.7.1)
-      concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
-    sprockets-rails (3.2.0)
-      actionpack (>= 4.0)
-      activesupport (>= 4.0)
-      sprockets (>= 3.0.0)
-    storext (2.2.2)
-      rails (>= 4.0, < 6.0)
-      virtus
-    thor (0.19.4)
-    thread_safe (0.3.6)
-    tzinfo (1.2.3)
-      thread_safe (~> 0.1)
-    unicode-display_width (1.3.0)
-    virtus (1.0.5)
-      axiom-types (~> 0.1)
-      coercible (~> 1.0)
-      descendants_tracker (~> 0.0, >= 0.0.3)
-      equalizer (~> 0.0, >= 0.0.9)
-    websocket-driver (0.6.5)
-      websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  minitest-ci
-  minitest-focus
-  pry-byebug
-  pry-highlight
-  pry-rails
-  pry-remote
-  rails (= 5.0.3)
-  rubocop
-  squint!
-  storext
-
-BUNDLED WITH
-   1.15.1
diff --git a/gemfiles/rails_4_2_8.gemfile b/gemfiles/rails_4_2_8.gemfile
deleted file mode 100644
index 44926d8..0000000
--- a/gemfiles/rails_4_2_8.gemfile
+++ /dev/null
@@ -1,16 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "minitest-ci"
-gem "minitest-focus", group: [:development, :test], require: false
-gem "pry-byebug", group: [:development, :test]
-gem "pry-highlight", group: [:development, :test]
-gem "pry-rails", group: [:development, :test]
-gem "pry-remote", group: [:development, :test]
-gem "pg", "~> 0.18", group: [:development, :test]
-gem "rubocop", require: false
-gem "storext"
-gem "rails", "4.2.8"
-
-gemspec path: "../"
diff --git a/gemfiles/rails_4_2_8.gemfile.lock b/gemfiles/rails_4_2_8.gemfile.lock
deleted file mode 100644
index 025ff3e..0000000
--- a/gemfiles/rails_4_2_8.gemfile.lock
+++ /dev/null
@@ -1,187 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    squint (1.1.0)
-      pg
-      rails (>= 4.2.8)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    actionmailer (4.2.8)
-      actionpack (= 4.2.8)
-      actionview (= 4.2.8)
-      activejob (= 4.2.8)
-      mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.8)
-      actionview (= 4.2.8)
-      activesupport (= 4.2.8)
-      rack (~> 1.6)
-      rack-test (~> 0.6.2)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (4.2.8)
-      activesupport (= 4.2.8)
-      builder (~> 3.1)
-      erubis (~> 2.7.0)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (4.2.8)
-      activesupport (= 4.2.8)
-      globalid (>= 0.3.0)
-    activemodel (4.2.8)
-      activesupport (= 4.2.8)
-      builder (~> 3.1)
-    activerecord (4.2.8)
-      activemodel (= 4.2.8)
-      activesupport (= 4.2.8)
-      arel (~> 6.0)
-    activesupport (4.2.8)
-      i18n (~> 0.7)
-      minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
-      tzinfo (~> 1.1)
-    appraisal (2.2.0)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    arel (6.0.4)
-    ast (2.4.0)
-    axiom-types (0.1.1)
-      descendants_tracker (~> 0.0.4)
-      ice_nine (~> 0.11.0)
-      thread_safe (~> 0.3, >= 0.3.1)
-    builder (3.2.3)
-    byebug (10.0.2)
-    coderay (1.1.2)
-    coercible (1.0.0)
-      descendants_tracker (~> 0.0.1)
-    concurrent-ruby (1.0.5)
-    crass (1.0.4)
-    descendants_tracker (0.0.4)
-      thread_safe (~> 0.3, >= 0.3.1)
-    equalizer (0.0.11)
-    erubis (2.7.0)
-    globalid (0.4.1)
-      activesupport (>= 4.2.0)
-    i18n (0.9.5)
-      concurrent-ruby (~> 1.0)
-    ice_nine (0.11.2)
-    jaro_winkler (1.5.1-x86_64-darwin-17)
-    json (2.1.0)
-    loofah (2.2.2)
-      crass (~> 1.0.2)
-      nokogiri (>= 1.5.9)
-    mail (2.7.1)
-      mini_mime (>= 0.1.1)
-    method_source (0.9.0)
-    mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
-    minitest (5.11.3)
-    minitest-ci (3.4.0)
-      minitest (>= 5.0.6)
-    minitest-focus (1.1.2)
-      minitest (>= 4, < 6)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
-    parallel (1.12.1)
-    parser (2.5.1.2)
-      ast (~> 2.4.0)
-    pg (0.21.0)
-    powerpack (0.1.2)
-    pry (0.11.3)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    pry-byebug (3.6.0)
-      byebug (~> 10.0)
-      pry (~> 0.10)
-    pry-highlight (0.1.0)
-      coderay
-      json
-      nokogiri
-      pry
-    pry-rails (0.3.6)
-      pry (>= 0.10.4)
-    pry-remote (0.1.8)
-      pry (~> 0.9)
-      slop (~> 3.0)
-    rack (1.6.10)
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rails (4.2.8)
-      actionmailer (= 4.2.8)
-      actionpack (= 4.2.8)
-      actionview (= 4.2.8)
-      activejob (= 4.2.8)
-      activemodel (= 4.2.8)
-      activerecord (= 4.2.8)
-      activesupport (= 4.2.8)
-      bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.8)
-      sprockets-rails
-    rails-deprecated_sanitizer (1.0.3)
-      activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.9)
-      activesupport (>= 4.2.0, < 5.0)
-      nokogiri (~> 1.6)
-      rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.4)
-      loofah (~> 2.2, >= 2.2.2)
-    railties (4.2.8)
-      actionpack (= 4.2.8)
-      activesupport (= 4.2.8)
-      rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
-    rainbow (3.0.0)
-    rake (12.3.1)
-    rubocop (0.59.2)
-      jaro_winkler (~> 1.5.1)
-      parallel (~> 1.10)
-      parser (>= 2.5, != 2.5.1.1)
-      powerpack (~> 0.1)
-      rainbow (>= 2.2.2, < 4.0)
-      ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.0, >= 1.0.1)
-    ruby-progressbar (1.10.0)
-    slop (3.6.0)
-    sprockets (3.7.2)
-      concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
-    sprockets-rails (3.2.1)
-      actionpack (>= 4.0)
-      activesupport (>= 4.0)
-      sprockets (>= 3.0.0)
-    storext (2.2.2)
-      rails (>= 4.0, < 6.0)
-      virtus
-    thor (0.20.0)
-    thread_safe (0.3.6)
-    tzinfo (1.2.5)
-      thread_safe (~> 0.1)
-    unicode-display_width (1.4.0)
-    virtus (1.0.5)
-      axiom-types (~> 0.1)
-      coercible (~> 1.0)
-      descendants_tracker (~> 0.0, >= 0.0.3)
-      equalizer (~> 0.0, >= 0.0.9)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  minitest-ci
-  minitest-focus
-  pg (~> 0.18)
-  pry-byebug
-  pry-highlight
-  pry-rails
-  pry-remote
-  rails (= 4.2.8)
-  rubocop
-  squint!
-  storext
-
-BUNDLED WITH
-   1.16.6
diff --git a/gemfiles/rails_4_2_9.gemfile b/gemfiles/rails_4_2_9.gemfile
deleted file mode 100644
index 87a47b3..0000000
--- a/gemfiles/rails_4_2_9.gemfile
+++ /dev/null
@@ -1,16 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "minitest-ci"
-gem "minitest-focus", group: [:development, :test], require: false
-gem "pry-byebug", group: [:development, :test]
-gem "pry-highlight", group: [:development, :test]
-gem "pry-rails", group: [:development, :test]
-gem "pry-remote", group: [:development, :test]
-gem "pg", "~> 0.18", group: [:development, :test]
-gem "rubocop", require: false
-gem "storext"
-gem "rails", "4.2.9"
-
-gemspec path: "../"
diff --git a/gemfiles/rails_4_2_9.gemfile.lock b/gemfiles/rails_4_2_9.gemfile.lock
deleted file mode 100644
index afd8906..0000000
--- a/gemfiles/rails_4_2_9.gemfile.lock
+++ /dev/null
@@ -1,187 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    squint (1.1.0)
-      pg
-      rails (>= 4.2.8)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    actionmailer (4.2.9)
-      actionpack (= 4.2.9)
-      actionview (= 4.2.9)
-      activejob (= 4.2.9)
-      mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.9)
-      actionview (= 4.2.9)
-      activesupport (= 4.2.9)
-      rack (~> 1.6)
-      rack-test (~> 0.6.2)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (4.2.9)
-      activesupport (= 4.2.9)
-      builder (~> 3.1)
-      erubis (~> 2.7.0)
-      rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (4.2.9)
-      activesupport (= 4.2.9)
-      globalid (>= 0.3.0)
-    activemodel (4.2.9)
-      activesupport (= 4.2.9)
-      builder (~> 3.1)
-    activerecord (4.2.9)
-      activemodel (= 4.2.9)
-      activesupport (= 4.2.9)
-      arel (~> 6.0)
-    activesupport (4.2.9)
-      i18n (~> 0.7)
-      minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
-      tzinfo (~> 1.1)
-    appraisal (2.2.0)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    arel (6.0.4)
-    ast (2.4.0)
-    axiom-types (0.1.1)
-      descendants_tracker (~> 0.0.4)
-      ice_nine (~> 0.11.0)
-      thread_safe (~> 0.3, >= 0.3.1)
-    builder (3.2.3)
-    byebug (10.0.2)
-    coderay (1.1.2)
-    coercible (1.0.0)
-      descendants_tracker (~> 0.0.1)
-    concurrent-ruby (1.0.5)
-    crass (1.0.4)
-    descendants_tracker (0.0.4)
-      thread_safe (~> 0.3, >= 0.3.1)
-    equalizer (0.0.11)
-    erubis (2.7.0)
-    globalid (0.4.1)
-      activesupport (>= 4.2.0)
-    i18n (0.9.5)
-      concurrent-ruby (~> 1.0)
-    ice_nine (0.11.2)
-    jaro_winkler (1.5.1-x86_64-darwin-17)
-    json (2.1.0)
-    loofah (2.2.2)
-      crass (~> 1.0.2)
-      nokogiri (>= 1.5.9)
-    mail (2.7.1)
-      mini_mime (>= 0.1.1)
-    method_source (0.9.0)
-    mini_mime (1.0.1)
-    mini_portile2 (2.3.0)
-    minitest (5.11.3)
-    minitest-ci (3.4.0)
-      minitest (>= 5.0.6)
-    minitest-focus (1.1.2)
-      minitest (>= 4, < 6)
-    nokogiri (1.8.5)
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-    powerpack (0.1.2)
-    pry (0.11.3)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    pry-byebug (3.6.0)
-      byebug (~> 10.0)
-      pry (~> 0.10)
-    pry-highlight (0.1.0)
-      coderay
-      json
-      nokogiri
-      pry
-    pry-rails (0.3.6)
-      pry (>= 0.10.4)
-    pry-remote (0.1.8)
-      pry (~> 0.9)
-      slop (~> 3.0)
-    rack (1.6.10)
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rails (4.2.9)
-      actionmailer (= 4.2.9)
-      actionpack (= 4.2.9)
-      actionview (= 4.2.9)
-      activejob (= 4.2.9)
-      activemodel (= 4.2.9)
-      activerecord (= 4.2.9)
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-      bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.9)
-      sprockets-rails
-    rails-deprecated_sanitizer (1.0.3)
-      activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.9)
-      activesupport (>= 4.2.0, < 5.0)
-      nokogiri (~> 1.6)
-      rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.4)
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-      actionpack (= 4.2.9)
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-      rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
-    rainbow (3.0.0)
-    rake (12.3.1)
-    rubocop (0.59.2)
-      jaro_winkler (~> 1.5.1)
-      parallel (~> 1.10)
-      parser (>= 2.5, != 2.5.1.1)
-      powerpack (~> 0.1)
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-      ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.0, >= 1.0.1)
-    ruby-progressbar (1.10.0)
-    slop (3.6.0)
-    sprockets (3.7.2)
-      concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
-    sprockets-rails (3.2.1)
-      actionpack (>= 4.0)
-      activesupport (>= 4.0)
-      sprockets (>= 3.0.0)
-    storext (2.2.2)
-      rails (>= 4.0, < 6.0)
-      virtus
-    thor (0.20.0)
-    thread_safe (0.3.6)
-    tzinfo (1.2.5)
-      thread_safe (~> 0.1)
-    unicode-display_width (1.4.0)
-    virtus (1.0.5)
-      axiom-types (~> 0.1)
-      coercible (~> 1.0)
-      descendants_tracker (~> 0.0, >= 0.0.3)
-      equalizer (~> 0.0, >= 0.0.9)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  minitest-ci
-  minitest-focus
-  pg (~> 0.18)
-  pry-byebug
-  pry-highlight
-  pry-rails
-  pry-remote
-  rails (= 4.2.9)
-  rubocop
-  squint!
-  storext
-
-BUNDLED WITH
-   1.16.6
diff --git a/gemfiles/rails_5_0.gemfile b/gemfiles/rails_5_0.gemfile
deleted file mode 100644
index 6349ef4..0000000
--- a/gemfiles/rails_5_0.gemfile
+++ /dev/null
@@ -1,15 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "minitest-ci"
-gem "minitest-focus", group: [:development, :test], require: false
-gem "pry-byebug", group: [:development, :test]
-gem "pry-highlight", group: [:development, :test]
-gem "pry-rails", group: [:development, :test]
-gem "pry-remote", group: [:development, :test]
-gem "rubocop", require: false
-gem "storext"
-gem "rails", "5.0.4"
-
-gemspec path: "../"
diff --git a/gemfiles/rails_5_0.gemfile.lock b/gemfiles/rails_5_0.gemfile.lock
deleted file mode 100644
index 531841d..0000000
--- a/gemfiles/rails_5_0.gemfile.lock
+++ /dev/null
@@ -1,191 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    squint (0.0.3)
-      pg
-      rails (>= 4.2.8)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    actioncable (5.0.3)
-      actionpack (= 5.0.3)
-      nio4r (>= 1.2, < 3.0)
-      websocket-driver (~> 0.6.1)
-    actionmailer (5.0.3)
-      actionpack (= 5.0.3)
-      actionview (= 5.0.3)
-      activejob (= 5.0.3)
-      mail (~> 2.5, >= 2.5.4)
-      rails-dom-testing (~> 2.0)
-    actionpack (5.0.3)
-      actionview (= 5.0.3)
-      activesupport (= 5.0.3)
-      rack (~> 2.0)
-      rack-test (~> 0.6.3)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (5.0.3)
-      activesupport (= 5.0.3)
-      builder (~> 3.1)
-      erubis (~> 2.7.0)
-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (5.0.3)
-      activesupport (= 5.0.3)
-      globalid (>= 0.3.6)
-    activemodel (5.0.3)
-      activesupport (= 5.0.3)
-    activerecord (5.0.3)
-      activemodel (= 5.0.3)
-      activesupport (= 5.0.3)
-      arel (~> 7.0)
-    activesupport (5.0.3)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (~> 0.7)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-    appraisal (2.2.0)
-      bundler
-      rake
-      thor (>= 0.14.0)
-    arel (7.1.4)
-    ast (2.3.0)
-    axiom-types (0.1.1)
-      descendants_tracker (~> 0.0.4)
-      ice_nine (~> 0.11.0)
-      thread_safe (~> 0.3, >= 0.3.1)
-    builder (3.2.3)
-    byebug (9.0.6)
-    coderay (1.1.1)
-    coercible (1.0.0)
-      descendants_tracker (~> 0.0.1)
-    concurrent-ruby (1.0.5)
-    descendants_tracker (0.0.4)
-      thread_safe (~> 0.3, >= 0.3.1)
-    equalizer (0.0.11)
-    erubis (2.7.0)
-    globalid (0.4.0)
-      activesupport (>= 4.2.0)
-    i18n (0.8.4)
-    ice_nine (0.11.2)
-    json (2.1.0)
-    loofah (2.0.3)
-      nokogiri (>= 1.5.9)
-    mail (2.6.6)
-      mime-types (>= 1.16, < 4)
-    method_source (0.8.2)
-    mime-types (3.1)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
-    mini_portile2 (2.2.0)
-    minitest (5.10.2)
-    minitest-ci (3.2.0)
-      minitest (>= 5.0.6)
-    minitest-focus (1.1.2)
-      minitest (>= 4, < 6)
-    nio4r (2.1.0)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
-    parallel (1.11.2)
-    parser (2.4.0.0)
-      ast (~> 2.2)
-    pg (0.21.0)
-    powerpack (0.1.1)
-    pry (0.10.4)
-      coderay (~> 1.1.0)
-      method_source (~> 0.8.1)
-      slop (~> 3.4)
-    pry-byebug (3.4.2)
-      byebug (~> 9.0)
-      pry (~> 0.10)
-    pry-highlight (0.1.0)
-      coderay
-      json
-      nokogiri
-      pry
-    pry-rails (0.3.6)
-      pry (>= 0.10.4)
-    pry-remote (0.1.8)
-      pry (~> 0.9)
-      slop (~> 3.0)
-    rack (2.0.3)
-    rack-test (0.6.3)
-      rack (>= 1.0)
-    rails (5.0.3)
-      actioncable (= 5.0.3)
-      actionmailer (= 5.0.3)
-      actionpack (= 5.0.3)
-      actionview (= 5.0.3)
-      activejob (= 5.0.3)
-      activemodel (= 5.0.3)
-      activerecord (= 5.0.3)
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-      actionpack (= 5.0.3)
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-    storext (2.2.2)
-      rails (>= 4.0, < 6.0)
-      virtus
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-      axiom-types (~> 0.1)
-      coercible (~> 1.0)
-      descendants_tracker (~> 0.0, >= 0.0.3)
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-    websocket-driver (0.6.5)
-      websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  minitest-ci
-  minitest-focus
-  pry-byebug
-  pry-highlight
-  pry-rails
-  pry-remote
-  rails (= 5.0.3)
-  rubocop
-  squint!
-  storext
-
-BUNDLED WITH
-   1.15.1
diff --git a/gemfiles/rails_5_0_3.gemfile b/gemfiles/rails_5_0_3.gemfile
deleted file mode 100644
index 38aee77..0000000
--- a/gemfiles/rails_5_0_3.gemfile
+++ /dev/null
@@ -1,16 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "minitest-ci"
-gem "minitest-focus", group: [:development, :test], require: false
-gem "pry-byebug", group: [:development, :test]
-gem "pry-highlight", group: [:development, :test]
-gem "pry-rails", group: [:development, :test]
-gem "pry-remote", group: [:development, :test]
-gem "pg", "~> 0.18", group: [:development, :test]
-gem "rubocop", require: false
-gem "storext"
-gem "rails", "5.0.3"
-
-gemspec path: "../"
diff --git a/gemfiles/rails_5_0_3.gemfile.lock b/gemfiles/rails_5_0_3.gemfile.lock
deleted file mode 100644
index 56d27f2..0000000
--- a/gemfiles/rails_5_0_3.gemfile.lock
+++ /dev/null
@@ -1,193 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    squint (1.1.0)
-      pg
-      rails (>= 4.2.8)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
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-      actionpack (= 5.0.3)
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-      actionview (= 5.0.3)
-      activesupport (= 5.0.3)
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-      rails-dom-testing (~> 2.0)
-      rails-html-sanitizer (~> 1.0, >= 1.0.3)
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-      byebug (~> 10.0)
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-      actionmailer (= 5.0.3)
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-      websocket-extensions (>= 0.1.0)
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-PLATFORMS
-  ruby
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-  appraisal
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-  pry-highlight
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-  pry-remote
-  rails (= 5.0.3)
-  rubocop
-  squint!
-  storext
-
-BUNDLED WITH
-   1.16.6
diff --git a/gemfiles/rails_5_0_4.gemfile b/gemfiles/rails_5_0_4.gemfile
deleted file mode 100644
index 6684dca..0000000
--- a/gemfiles/rails_5_0_4.gemfile
+++ /dev/null
@@ -1,16 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "minitest-ci"
-gem "minitest-focus", group: [:development, :test], require: false
-gem "pry-byebug", group: [:development, :test]
-gem "pry-highlight", group: [:development, :test]
-gem "pry-rails", group: [:development, :test]
-gem "pry-remote", group: [:development, :test]
-gem "pg", "~> 0.18", group: [:development, :test]
-gem "rubocop", require: false
-gem "storext"
-gem "rails", "5.0.4"
-
-gemspec path: "../"
diff --git a/gemfiles/rails_5_0_4.gemfile.lock b/gemfiles/rails_5_0_4.gemfile.lock
deleted file mode 100644
index 3a9bbda..0000000
--- a/gemfiles/rails_5_0_4.gemfile.lock
+++ /dev/null
@@ -1,193 +0,0 @@
-PATH
-  remote: ..
-  specs:
-    squint (1.1.0)
-      pg
-      rails (>= 4.2.8)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
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-      rails-dom-testing (~> 2.0)
-    actionpack (5.0.4)
-      actionview (= 5.0.4)
-      activesupport (= 5.0.4)
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-      rails-dom-testing (~> 2.0)
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-    byebug (10.0.2)
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-  appraisal
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-  rails (= 5.0.4)
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-BUNDLED WITH
-   1.16.6
diff --git a/gemfiles/rails_5_1_2.gemfile b/gemfiles/rails_5_1_2.gemfile
deleted file mode 100644
index cd62ade..0000000
--- a/gemfiles/rails_5_1_2.gemfile
+++ /dev/null
@@ -1,16 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "minitest-ci"
-gem "minitest-focus", group: [:development, :test], require: false
-gem "pry-byebug", group: [:development, :test]
-gem "pry-highlight", group: [:development, :test]
-gem "pry-rails", group: [:development, :test]
-gem "pry-remote", group: [:development, :test]
-gem "pg", "~> 0.18", group: [:development, :test]
-gem "rubocop", require: false
-gem "storext"
-gem "rails", "5.1.2"
-
-gemspec path: "../"
diff --git a/gemfiles/rails_5_1_2.gemfile.lock b/gemfiles/rails_5_1_2.gemfile.lock
deleted file mode 100644
index 2b1c9cd..0000000
--- a/gemfiles/rails_5_1_2.gemfile.lock
+++ /dev/null
@@ -1,193 +0,0 @@
-PATH
-  remote: ..
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-      pg
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-GEM
-  remote: https://rubygems.org/
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-      activesupport (= 5.1.2)
-      bundler (>= 1.3.0, < 2.0)
-      railties (= 5.1.2)
-      sprockets-rails (>= 2.0.0)
-    rails-dom-testing (2.0.3)
-      activesupport (>= 4.2.0)
-      nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.4)
-      loofah (~> 2.2, >= 2.2.2)
-    railties (5.1.2)
-      actionpack (= 5.1.2)
-      activesupport (= 5.1.2)
-      method_source
-      rake (>= 0.8.7)
-      thor (>= 0.18.1, < 2.0)
-    rainbow (3.0.0)
-    rake (12.3.1)
-    rubocop (0.59.2)
-      jaro_winkler (~> 1.5.1)
-      parallel (~> 1.10)
-      parser (>= 2.5, != 2.5.1.1)
-      powerpack (~> 0.1)
-      rainbow (>= 2.2.2, < 4.0)
-      ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.0, >= 1.0.1)
-    ruby-progressbar (1.10.0)
-    slop (3.6.0)
-    sprockets (3.7.2)
-      concurrent-ruby (~> 1.0)
-      rack (> 1, < 3)
-    sprockets-rails (3.2.1)
-      actionpack (>= 4.0)
-      activesupport (>= 4.0)
-      sprockets (>= 3.0.0)
-    storext (2.2.2)
-      rails (>= 4.0, < 6.0)
-      virtus
-    thor (0.20.0)
-    thread_safe (0.3.6)
-    tzinfo (1.2.5)
-      thread_safe (~> 0.1)
-    unicode-display_width (1.4.0)
-    virtus (1.0.5)
-      axiom-types (~> 0.1)
-      coercible (~> 1.0)
-      descendants_tracker (~> 0.0, >= 0.0.3)
-      equalizer (~> 0.0, >= 0.0.9)
-    websocket-driver (0.6.5)
-      websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.3)
-
-PLATFORMS
-  ruby
-
-DEPENDENCIES
-  appraisal
-  minitest-ci
-  minitest-focus
-  pg (~> 0.18)
-  pry-byebug
-  pry-highlight
-  pry-rails
-  pry-remote
-  rails (= 5.1.2)
-  rubocop
-  squint!
-  storext
-
-BUNDLED WITH
-   1.16.6
diff --git a/gemfiles/rails_5_2_1.gemfile b/gemfiles/rails_5_2_1.gemfile
index 339ba1b..a65818c 100644
--- a/gemfiles/rails_5_2_1.gemfile
+++ b/gemfiles/rails_5_2_1.gemfile
@@ -4,10 +4,6 @@ source "https://rubygems.org"
 
 gem "minitest-ci"
 gem "minitest-focus", group: [:development, :test], require: false
-gem "pry-byebug", group: [:development, :test]
-gem "pry-highlight", group: [:development, :test]
-gem "pry-rails", group: [:development, :test]
-gem "pry-remote", group: [:development, :test]
 gem "pg", "~> 0.18", group: [:development, :test]
 gem "rubocop", require: false
 gem "storext"
diff --git a/lib/squint.rb b/lib/squint.rb
index 00cdcd8..739dcd1 100644
--- a/lib/squint.rb
+++ b/lib/squint.rb
@@ -27,7 +27,7 @@ module WhereMethods
       reln = args.inject([]) do |memo, arg|
         if arg.is_a?(Hash)
           arg.keys.each do |key|
-            if arg[key].is_a?(Hash) && HASH_DATA_COLUMNS[key]
+            if arg[key].is_a?(Hash) && klass::HASH_DATA_COLUMNS[key]
               memo << klass.squint_hash_field_reln(key => arg[key])
             else
               save_args[0] ||= {}
@@ -70,7 +70,7 @@ module WhereMethods
     # put together a list of columns in this model
     # that are hstore, json, or jsonb and will benefit from
     # searchability
-    HASH_DATA_COLUMNS ||= base.columns_hash.keys.map do |col_name|
+    base::HASH_DATA_COLUMNS = base.columns_hash.keys.map do |col_name|
       if %w[hstore json jsonb].include?(base.columns_hash[col_name].sql_type)
         [col_name.to_sym, base.columns_hash[col_name].sql_type]
       end
@@ -91,7 +91,7 @@ module WhereMethods
     def self.squint_hash_field_reln(*args)
       temp_attr = args[0]
       contains_nil = false
-      column_type = HASH_DATA_COLUMNS[args[0].keys.first]
+      column_type = self::HASH_DATA_COLUMNS[args[0].keys.first]
       column_name_segments = []
       quote_char = '"'.freeze
       while  temp_attr.is_a?(Hash)
diff --git a/squint.gemspec b/squint.gemspec
index 8f76e20..83d0609 100644
--- a/squint.gemspec
+++ b/squint.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |s|
                 "Rakefile", "readme.md", ".all-contributorsrc"]
   s.test_files = Dir["test/**/*"]
 
-  s.add_dependency "rails", ">= 4.2.8"
+  s.add_dependency "rails", ">= 5.1.6.2"
   s.add_dependency "pg"
 
   s.add_development_dependency 'appraisal'
diff --git a/test/dummy/app/assets/config/manifest.js b/test/dummy/app/assets/config/manifest.js
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/test/dummy/app/assets/config/manifest.js
@@ -0,0 +1 @@
+{}
diff --git a/test/dummy/app/models/post.rb b/test/dummy/app/models/post.rb
index 911b20f..c4afd6a 100644
--- a/test/dummy/app/models/post.rb
+++ b/test/dummy/app/models/post.rb
@@ -11,4 +11,6 @@ class Post < ActiveRecord::Base
   store_attribute :storext_hstore_attributes, :hstore_friend_count, Integer, default: 0
   store_attribute :storext_hstore_attributes, :hstore_is_awesome, Integer, default: false
   store_attribute :storext_hstore_attributes, :hstore_is_present, Integer, default: nil
+
+  store_attribute :settings, :zip_code, String, default: '90210'
 end
diff --git a/test/dummy/app/models/user.rb b/test/dummy/app/models/user.rb
new file mode 100644
index 0000000..a8cc09b
--- /dev/null
+++ b/test/dummy/app/models/user.rb
@@ -0,0 +1,6 @@
+class User < ActiveRecord::Base
+  include Storext.model
+  include Squint
+
+  store_attribute :settings, :zip_code, String, default: '90210'
+end
diff --git a/test/dummy/db/migrate/20200318185942_create_users.rb b/test/dummy/db/migrate/20200318185942_create_users.rb
new file mode 100644
index 0000000..33974a1
--- /dev/null
+++ b/test/dummy/db/migrate/20200318185942_create_users.rb
@@ -0,0 +1,9 @@
+class CreateUsers < ActiveRecord::Migration
+  def change
+    create_table :users do |t|
+      t.hstore :settings
+
+      t.timestamps null: false
+    end
+  end
+end
diff --git a/test/dummy/db/migrate/20200318185943_add_settings_to_posts.rb b/test/dummy/db/migrate/20200318185943_add_settings_to_posts.rb
new file mode 100644
index 0000000..6d4e79b
--- /dev/null
+++ b/test/dummy/db/migrate/20200318185943_add_settings_to_posts.rb
@@ -0,0 +1,7 @@
+class AddSettingsToPosts < ActiveRecord::Migration
+  def change
+    change_table :posts do |t|
+      t.jsonb :settings
+    end
+  end
+end
diff --git a/test/dummy/db/schema.rb b/test/dummy/db/schema.rb
index 8a8e3b4..d9226c7 100644
--- a/test/dummy/db/schema.rb
+++ b/test/dummy/db/schema.rb
@@ -1,4 +1,3 @@
-# encoding: UTF-8
 # This file is auto-generated from the current state of the database. Instead
 # of editing this file, please use the migrations feature of Active Record to
 # incrementally modify your database, and then regenerate this schema definition.
@@ -11,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170512185941) do
+ActiveRecord::Schema.define(version: 20200318185943) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -26,11 +25,17 @@
     t.hstore   "storext_hstore_attributes"
     t.datetime "created_at",                null: false
     t.datetime "updated_at",                null: false
+    t.jsonb    "settings"
+    t.index ["properties"], name: "index_posts_on_properties", using: :gin
+    t.index ["request_info"], name: "index_posts_on_request_info", using: :gin
+    t.index ["storext_hstore_attributes"], name: "index_posts_on_storext_hstore_attributes", using: :gin
+    t.index ["storext_jsonb_attributes"], name: "index_posts_on_storext_jsonb_attributes", using: :gin
   end
 
-  add_index "posts", ["properties"], name: "index_posts_on_properties", using: :gin
-  add_index "posts", ["request_info"], name: "index_posts_on_request_info", using: :gin
-  add_index "posts", ["storext_hstore_attributes"], name: "index_posts_on_storext_hstore_attributes", using: :gin
-  add_index "posts", ["storext_jsonb_attributes"], name: "index_posts_on_storext_jsonb_attributes", using: :gin
+  create_table "users", force: :cascade do |t|
+    t.hstore   "settings"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
 
 end
diff --git a/test/dummy/user.rb b/test/dummy/user.rb
new file mode 100644
index 0000000..a8cc09b
--- /dev/null
+++ b/test/dummy/user.rb
@@ -0,0 +1,6 @@
+class User < ActiveRecord::Base
+  include Storext.model
+  include Squint
+
+  store_attribute :settings, :zip_code, String, default: '90210'
+end
diff --git a/test/squint_test.rb b/test/squint_test.rb
index b87d945..4e7653e 100644
--- a/test/squint_test.rb
+++ b/test/squint_test.rb
@@ -132,4 +132,9 @@ class SquintTest < ActiveSupport::TestCase
                    created_at: '2015-01-01')
     end
   end
+
+  test 'HASH_DATA_COLUMNS is not shared between models' do
+    assert_equal('hstore', User::HASH_DATA_COLUMNS[:settings])
+    assert_equal('jsonb' , Post::HASH_DATA_COLUMNS[:settings])
+  end
 end