Merge branch 'master' of https://git.heroku.com/snapcon into temp

* 'master' of https://git.heroku.com/snapcon:
  Update sentry logging

config/initializers/sentry.rb

@@ -1,4 +1,13 @@
 Sentry.init do |config|
   config.enabled_environments = %|production staging|
   config.dsn = ENV['SENTRY_DSN']
+  config.breadcrumbs_logger = [:active_support_logger]
+
+  # To activate performance monitoring, set one of these options.
+  # We recommend adjusting the value in production:
+  config.traces_sample_rate = 0.5
+  # or
+  # config.traces_sampler = lambda do |context|
+  #   true
+  # end
 end