[SpecHelper] Improve support for Bacon.
[PathList] Don't modify input patterns
[PathList] Fix #relative_glob and clean up the code
[Sandbox] Add #relativize from LocalPod#relativize_from_sandbox
[Bacon] Add support for 'fit' - focused specs.
[Specs] Update Fixtures
Merge branch '0.17' into LocalPod-refactor

* 0.17:
  Added help display tests. added lint test for nonexistent specs. Removed cat tests in favor of which tests
  Removed Gemfile.lock
  GitIgnore Gemfile.lock
  Modified gitmodules to ignore the SSToolKit submodule when it's marked as dirty
  Fixed tests for which
  Adding which tests
  Edited editor behavior and errors
  Fixed no input
  Added pod spec which and edit, edited cat
  Updated example podspec comment

Conflicts:
	Gemfile.lock
Move LocalPods::PathList to Sandbox::PathList
[PathList] Check that root exists before reading the file system.
[PathList] Update specs.
Added Sandbox::FileAccessor to read specs.
[UI] Disable deprecations warnings in the RCs.
[Downloader] fix raise on failure.
[TargetHeader] Add warning.
[Generator::Acknowledgements] Adapt for new architecture.
[Generators] Update for changes in architecture.
[FileAcessor] Use the consumer #license and #prefix_header
[Sandbox] Added #relativize_paths.
[Documentation] Minor fix.
[Validator] Minor fix.