Merge pull request #131 from tknzk/bundle_update

bundle update

Gemfile.lock

@@ -33,7 +33,7 @@ GEM
     guard-rubocop (1.4.0)
       guard (~> 2.0)
       rubocop (< 2.0)
-    listen (3.3.3)
+    listen (3.4.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     lumberjack (1.2.8)
@@ -80,9 +80,9 @@ GEM
       rubocop-ast (>= 1.2.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
-    rubocop-ast (1.3.0)
+    rubocop-ast (1.4.0)
       parser (>= 2.7.1.5)
-    rubocop-performance (1.9.1)
+    rubocop-performance (1.9.2)
       rubocop (>= 0.90.0, < 2.0)
       rubocop-ast (>= 0.4.0)
     ruby-progressbar (1.11.0)
@@ -108,4 +108,4 @@ DEPENDENCIES
   rubocop-performance
 
 BUNDLED WITH
-   2.1.4
+   2.2.3