Drops support for Rails 4, add support for Rails 5

.travis.yml

@@ -1,10 +1,11 @@
 language: ruby
 rvm:
-  - 1.9.3
-  - 2.0.0
   - 2.2.2
+  - 2.3.7
+  - 2.4.4
+  - 2.5.1
 gemfile:
-  - gemfiles/4.0.gemfile
-  - gemfiles/4.1.gemfile
-  - gemfiles/4.2.gemfile
+  - gemfiles/5.0.gemfile
+  - gemfiles/5.1.gemfile
+  - gemfiles/5.2.gemfile
 script: "bundle exec rake clean test"

Gemfile.lock

@@ -1,65 +1,69 @@
 PATH
   remote: .
   specs:
-    has_draft (1.3.0)
-      activerecord (>= 3.0.0)
-      activesupport (>= 3.0.0)
+    has_draft (2.0.0)
+      activerecord (>= 5.0.0)
+      activesupport (>= 5.0.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    activemodel (4.2.3)
-      activesupport (= 4.2.3)
-      builder (~> 3.1)
-    activerecord (4.2.3)
-      activemodel (= 4.2.3)
-      activesupport (= 4.2.3)
-      arel (~> 6.0)
-    activesupport (4.2.3)
-      i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
+    activemodel (5.2.1)
+      activesupport (= 5.2.1)
+    activerecord (5.2.1)
+      activemodel (= 5.2.1)
+      activesupport (= 5.2.1)
+      arel (>= 9.0)
+    activesupport (5.2.1)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
       minitest (~> 5.1)
-      thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    appraisal (2.0.2)
+    appraisal (2.2.0)
       bundler
       rake
       thor (>= 0.14.0)
-    arel (6.0.0)
-    builder (3.2.2)
-    diff-lcs (1.2.5)
-    factory_girl (1.3.3)
-    faker (0.9.5)
-      i18n (~> 0.4)
-    i18n (0.7.0)
-    json (1.8.3)
-    minitest (5.7.0)
-    rake (10.4.2)
-    rspec (2.99.0)
-      rspec-core (~> 2.99.0)
-      rspec-expectations (~> 2.99.0)
-      rspec-mocks (~> 2.99.0)
-    rspec-core (2.99.2)
-    rspec-expectations (2.99.2)
-      diff-lcs (>= 1.1.3, < 2.0)
-    rspec-mocks (2.99.4)
-    sqlite3 (1.3.10)
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tzinfo (1.2.2)
+    arel (9.0.0)
+    concurrent-ruby (1.0.5)
+    diff-lcs (1.3)
+    factory_bot (4.11.0)
+      activesupport (>= 3.0.0)
+    faker (1.9.1)
+      i18n (>= 0.7)
+    i18n (1.1.0)
+      concurrent-ruby (~> 1.0)
+    minitest (5.11.3)
+    rake (12.3.1)
+    rspec (3.8.0)
+      rspec-core (~> 3.8.0)
+      rspec-expectations (~> 3.8.0)
+      rspec-mocks (~> 3.8.0)
+    rspec-core (3.8.0)
+      rspec-support (~> 3.8.0)
+    rspec-expectations (3.8.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.8.0)
+    rspec-mocks (3.8.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.8.0)
+    rspec-support (3.8.0)
+    sqlite3 (1.3.13)
+    thor (0.20.0)
+    thread_safe (0.3.6)
+    tzinfo (1.2.5)
       thread_safe (~> 0.1)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  appraisal (~> 2.0.2)
-  factory_girl (~> 1.3.1)
-  faker (~> 0.9.1)
+  appraisal (~> 2.2.0)
+  factory_bot (~> 4.11)
+  faker (~> 1.9.1)
   has_draft!
   rake
-  rspec (~> 2.0)
-  sqlite3 (~> 1.3.4)
+  rspec (~> 3.8)
+  sqlite3 (~> 1.3.13)
 
 BUNDLED WITH
-   1.10.4
+   1.16.3