Updated mail gem 2.6.1 -> 2.6.3
Updated sass-rails gem 4.0.3 -> 4.0.4 and sprockets 2.11.0 -> 2.11.3

The newer sprockets version fixes a minor vulnerability.
Updated aws-sdk 1.55.0 -> 1.57.0
Updated devise gem 3.4.0 -> 3.4.1
Updated devise_invitable gem 1.3.6 -> 1.4.0
Update feedjira gem 1.4.0 -> 1.5.0 and sax-machine gem 1.0.1 -> 1.0.2
Updated newrelic_rpm gem 3.9.5.251 -> 3.9.6.257
Updated puma gem 2.9.1 -> 2.9.2
Upgraded capybara-webkit gem 1.3.0 -> 1.3.1
Updated factory_girl gem 4.4.0 -> 4.5.0 and factory_girl_rails gem 4.4.1 -> 4.5.0
Updated launchy gem 2.4.2 -> 2.4.3
Updated sqlite3 gem 1.3.9 -> 1.3.10
Updated yard gem 0.8.7.4 -> 0.8.7.6
Update rspec-core 3.1.4 -> 3.1.7
Updated redis gem 3.0.7 -> 3.1.0 and redis-namespace gem 1.4.1 -> 1.5.1
Updated rspec-expectations 3.1.1 -> 3.1.2
Updated rspec-mocks gem 3.1.1 -> 3.1.3
Updated arbre gem 1.0.1 -> 1.0.2
Downgraded sidekiq gem 3.2.5 -> 3.2.4

Hey, don't look at me. It looks like versions 3.2.5 and 3.2.6 were yanked from rubygems or something. I can't find anything in the github bugtracker for sidekiq, but just in case I'm trusting bundler and allowing it to downgrade to 3.2.4 when I run a "bundle update sidekiq".