Ignore tags
Add .travis.yml
Keep test infrastructure up-to-date

Debugging
debugger doesn't work correctly any longer with Ruby 2.0.0,
Ruby 1.8.x is now end-of-life anyway.
Maybe depend on byebug instead? I just changed the Gemfile during debugging…

JSON
yajl-ruby doesn't compile for me on MacOS X :(, so just remove dependencies on it.

Redis
Has a problem to grok the glueoutputbuf config option, so just comment it out.
Use different debuggers for different platforms