Merge pull request #427 from portertech/version

beta version bump, updated changelog (check timeout)
[extension] hack the planet
[extension] working proof of concept
[extension] handler extensions for maximum power
[extension] metaprogramming, it can cut you
[extension] metaprogramming, how does it work?
[extension] extension dir cli arg, some tests
[extension] consistent use of constants, extension_dir in test helper
Merge pull request #428 from portertech/extension

Sensu "extensions", load mutator & handler extensions with Sensu itself
[refactoring] it begins
[refactoring] cleaned up a few more libs
[refactoring] created rabbitmq lib
[refactoring] adjusted logstream and cli
[refactoring] cleaned up execution scheduling
[refactoring] em-redis fork, redis reconnect, utilities, common connection api
[refactoring] common methods in utilities, fixed api fork'n, namespace
[refactoring] cleaned up aggregate severity count
[refactoring] ruby 1.8 friendly constant init
[refactoring] allow server to stop w/ redis disconnected
[refactoring] ruby 1.8 doesn't like it when you drop a block param