Required files
rspec/matchers/extensions/instance_exec
rspec/matchers/pretty
rspec/matchers/matcher
rspec/matchers/operator_matcher
rspec/matchers/be
rspec/matchers/be_close
rspec/matchers/be_instance_of
rspec/matchers/be_kind_of
rspec/matchers/be_within
rspec/matchers/block_aliases
rspec/matchers/change
rspec/matchers/cover
rspec/matchers/eq
rspec/matchers/eql
rspec/matchers/equal
rspec/matchers/errors
rspec/matchers/exist
rspec/matchers/generated_descriptions
rspec/matchers/has
rspec/matchers/have
rspec/matchers/include
rspec/matchers/match
rspec/matchers/match_array
rspec/matchers/method_missing
rspec/matchers/raise_error
rspec/matchers/respond_to
rspec/matchers/satisfy
rspec/matchers/throw_symbol
rspec/matchers/compatibility
rspec/matchers/dsl