Update Cask’s Gemfile.

Library/Homebrew/cask/Gemfile

@@ -11,10 +11,6 @@ group :development do
   gem "rubocop-cask", "~> 0.8.3"
 end
 
-group :release do
-  gem "ronn", "0.7.3"
-end
-
 group :test do
   gem "coveralls", require: false
   gem "minitest", "5.4.1"

Library/Homebrew/cask/Gemfile.lock

@@ -4,58 +4,40 @@ GEM
     ansi (1.5.0)
     ast (2.3.0)
     builder (3.2.2)
-    byebug (8.2.1)
-    coderay (1.1.0)
-    coveralls (0.8.10)
-      json (~> 1.8)
-      rest-client (>= 1.6.8, < 2)
-      simplecov (~> 0.11.0)
+    byebug (9.0.5)
+    coderay (1.1.1)
+    coveralls (0.8.15)
+      json (>= 1.8, < 3)
+      simplecov (~> 0.12.0)
       term-ansicolor (~> 1.3)
       thor (~> 0.19.1)
-      tins (~> 1.6.0)
+      tins (>= 1.6.0, < 2)
     diff-lcs (1.2.5)
     docile (1.1.5)
-    domain_name (0.5.25)
-      unf (>= 0.0.5, < 1.0.0)
-    hpricot (0.8.6)
-    http-cookie (1.0.2)
-      domain_name (~> 0.5)
-    json (1.8.3)
+    json (2.0.2)
     metaclass (0.0.4)
     method_source (0.8.2)
-    mime-types (2.99)
     minitest (5.4.1)
-    minitest-reporters (1.1.7)
+    minitest-reporters (1.1.11)
       ansi
       builder
       minitest (>= 5.0)
       ruby-progressbar
     mocha (1.1.0)
       metaclass (~> 0.0.1)
-    mustache (1.0.2)
-    netrc (0.11.0)
     parser (2.3.1.2)
       ast (~> 2.2)
     powerpack (0.1.1)
-    pry (0.10.3)
+    pry (0.10.4)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    pry-byebug (3.3.0)
-      byebug (~> 8.0)
+    pry-byebug (3.4.0)
+      byebug (~> 9.0)
       pry (~> 0.10)
     public_suffix (2.0.2)
     rainbow (2.1.0)
     rake (10.4.2)
-    rdiscount (2.1.8)
-    rest-client (1.8.0)
-      http-cookie (>= 1.0.2, < 2.0)
-      mime-types (>= 1.16, < 3.0)
-      netrc (~> 0.7)
-    ronn (0.7.3)
-      hpricot (>= 0.8.2)
-      mustache (>= 0.7.0)
-      rdiscount (>= 1.5.8)
     rspec (3.0.0)
       rspec-core (~> 3.0.0)
       rspec-expectations (~> 3.0.0)
@@ -71,8 +53,8 @@ GEM
     rspec-mocks (3.0.4)
       rspec-support (~> 3.0.0)
     rspec-support (3.0.4)
-    rspec-wait (0.0.8)
-      rspec (>= 2.11, < 3.5)
+    rspec-wait (0.0.9)
+      rspec (>= 3, < 4)
     rubocop (0.41.2)
       parser (>= 2.3.1.1, < 3.0)
       powerpack (~> 0.1)
@@ -83,19 +65,16 @@ GEM
       public_suffix (~> 2.0)
       rubocop (~> 0.41.1)
     ruby-progressbar (1.8.1)
-    simplecov (0.11.1)
+    simplecov (0.12.0)
       docile (~> 1.1.0)
-      json (~> 1.8)
+      json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.0)
     slop (3.6.0)
     term-ansicolor (1.3.2)
       tins (~> 1.0)
     thor (0.19.1)
-    tins (1.6.0)
-    unf (0.1.4)
-      unf_ext
-    unf_ext (0.0.7.1)
+    tins (1.12.0)
     unicode-display_width (1.1.0)
 
 PLATFORMS
@@ -109,7 +88,6 @@ DEPENDENCIES
   pry
   pry-byebug
   rake
-  ronn (= 0.7.3)
   rspec (~> 3.0.0)
   rspec-its
   rspec-wait