Set required_ruby_version in gemspec
Merge branch 'remove18' into v2.0
Merge branch 'remove18' into 19only
Merge branch '19only' into v2.0
Remove Vagrantfile [ci skip]
Switch to 1.9 hash syntax
Update travis.yml
Remove deprecated code
Merge branch 'master' into v2.0
Merge branch 'master' into v2.0
Complete rewritte based on Celluloid

Work in progress (doesn't work yet)
Fix spec on 1.9 & little improvements
Don't forget to add bundle to ignored folders be default
First Listen::Change implementation
Require & method name cleaning
Fix require all
Implement Silencer
Make polling example work!
Improve specs
Fix Listen::Listener#start spec