Merge pull request #339 from plural/update-debug-gem

Update debug gem.

Author: plural

Gemfile.lock

@@ -101,9 +101,9 @@ GEM
     connection_pool (2.4.1)
     crass (1.0.6)
     date (3.4.1)
-    debug (1.8.0)
-      irb (>= 1.5.0)
-      reline (>= 0.3.1)
+    debug (1.9.2)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
     diff-lcs (1.5.1)
     docile (1.4.1)
     drb (2.2.1)