update memory profiler, oj and lru redux

Gemfile.lock

@@ -148,11 +148,11 @@ GEM
     libv8 (3.16.14.7)
     listen (0.7.3)
     logster (0.8.1)
-    lru_redux (0.8.4)
+    lru_redux (1.1.0)
     mail (2.5.4)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
-    memory_profiler (0.9.0)
+    memory_profiler (0.9.3)
     message_bus (1.0.12)
       rack (>= 1.1.3)
       redis
@@ -182,7 +182,7 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (~> 1.2)
-    oj (2.12.0)
+    oj (2.12.9)
     omniauth (1.2.2)
       hashie (>= 1.2, < 4)
       rack (~> 1.0)

config/initializers/06-mini_profiler.rb

@@ -3,8 +3,11 @@ if Rails.configuration.respond_to?(:load_mini_profiler) && Rails.configuration.l
   require 'rack-mini-profiler'
   require 'flamegraph'
 
-  # TODO support Ruby 2.2 once bundler fixes itself
-  require 'memory_profiler' if RUBY_VERSION >= "2.1.0" && RUBY_VERSION < "2.2.0"
+  begin
+    require 'memory_profiler' if RUBY_VERSION >= "2.1.0"
+  rescue => e
+     STDERR.put "#{e} failed to require mini profiler"
+  end
 
   # initialization is skipped so trigger it
   Rack::MiniProfilerRails.initialize!(Rails.application)