Skip the RSpec examples you don't need: rspec-tracer 2.0 in pre-release

A ground-up rewrite of test-skip caching for RSpec, with pluggable storage, Rails-aware tracking, and a per-example tracks: DSL. You change one model. You run bundle exec rspec. Twenty minutes later, every test in the suite has run again — including the 1,800 examples that don't touch that model. Th