Return the created PBXBuildFiles from PBXNativeTarget#add_file_references
Yield PBXBuildFiles for improved convenience
Add symbol getter and setter for dst_subfolder_spec to PBXCopyFilesBuildPhase
[Spec] Fix plurals
[Changelog] Add entry for #187
Merge pull request #187 from mrackwitz/minor_api_improvements

Minor API Improvements
Drop support for Ruby < 2.0.0
Merge pull request #212 from CocoaPods/ruby2

Drop support for Ruby < 2.0.0
Drop ISAS_SUPER_CLASSES because we have now ordered hashes
Remove version condition from spec
Merge pull request #213 from mrackwitz/ruby2

[Ruby2] Further cleanup
Release 0.20.0
[gemspec] Allow ActiveSupport 4 usage as well.
[bundle] update
[Project] Add a `shallow_eql?` method which performs a cheap comparison.
[NativeTarget] Make adding a target dependency O(1).

This greatly reduces the amount of time taken for large Podfiles.
Various doc and message fixes.
[Project] Make `#==` the fast shallow comparison method.

Because it's too hard to ensure that nobody will introduce changes into
Xcodeproj that will greatly slow down the project again.

For full data comparisons, use `#eql?` instead.
[rubocop] Disable max class length, it doesn't help.