Gemfile.lock in d_heap-0.2.2 vs Gemfile.lock in d_heap-0.3.0

@@ -1,14 +1,17 @@
 PATH
   remote: .
   specs:
-    d_heap (0.2.2)
+    d_heap (0.3.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.1)
+    benchmark-malloc (0.2.0)
+    benchmark-perf (0.6.0)
+    benchmark-trend (0.4.0)
     diff-lcs (1.4.4)
     parallel (1.19.2)
     parser (2.7.2.0)
       ast (~> 2.4.1)
     rainbow (3.0.0)
@@ -19,10 +22,15 @@
     rexml (3.2.3)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
       rspec-expectations (~> 3.10.0)
       rspec-mocks (~> 3.10.0)
+    rspec-benchmark (0.6.0)
+      benchmark-malloc (~> 0.2)
+      benchmark-perf (~> 0.6)
+      benchmark-trend (~> 0.4)
+      rspec (>= 3.0)
     rspec-core (3.10.0)
       rspec-support (~> 3.10.0)
     rspec-expectations (3.10.0)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
@@ -50,9 +58,10 @@
 DEPENDENCIES
   d_heap!
   rake (~> 13.0)
   rake-compiler
   rspec (~> 3.10)
+  rspec-benchmark
   rubocop (~> 1.0)
 
 BUNDLED WITH
    2.2.3