Merge pull request #813 from Parallel-in-Time/dependabot/bundler/rexml-3.3.0

Bump rexml from 3.2.6 to 3.3.0

Author: pancetta

Gemfile.lock

@@ -100,7 +100,8 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.6)
+    rexml (3.3.0)
+      strscan
     rouge (4.1.3)
     safe_yaml (1.0.5)
     sass (3.7.4)
@@ -112,6 +113,7 @@ GEM
     sass-listen (4.0.0)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
+    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     trollop (2.9.9)