Bug Fixes

• PlistHelper: Only try to use plutil if it's in the exact location where
  we expect it to be on OS X, instead of relying on the user's $PATH.
  Eloy Durán
  CocoaPods#2502

Bug Fixes

• Config: Remove space after -l flag in other linker flags.
  Fabio Pelosin

• PlistHelper: Now the plutil tool is used to save the files if available
  to produce output consistent with Xcode.
  Fabio Pelosin
• Project: Added support for adding file references to sub-projects.
  Fabio Pelosin
• Config: The config class now properly handles quotes in OTHER_LDFLAGS.
  Fabio Pelosin
• PBXGroup: Now file references to Xcode projects are properly handled and
  setup. Also the ObjectDictionary class has been improved and now can be
  used to edit the attributes using it.
  Fabio Pelosin
  Xcodeproj#172
• Constants: Support XCTest as product type and don't fail for
  PBXNativeTarget#symbol_type on unknown product types.
  Marius Rackwitz
  Xcodeproj#176
• Workspace: Now a template is used to produce the same formatting of Xcode.
  Fabio Pelosin
• Project: Improved validation of object attributes.
  Fabio Pelosin
• Project: Completed support for dictionaries.
  Fabio Pelosin
• Project: Added possibility to disable xcproj via an environment variable.
  Fabio Pelosin

Bug Fixes

• Project: Fixed reference counting issue when deleting sub-projects.

Enhancements

• [PlistHelper] The native extension has been removed in favour of the usage of
  the plutil tool to read ASCII property list files.
  Fabio Pelosin
  Xcodeproj#168
  Xcodeproj#167
• [PBXFileReference] If a file reference represents an external Xcode project
  and is removed from the project then all items related to the external
  project will also be removed.
  JP Simard
  Eloy Durán
  Xcodeproj#158
  Xcodeproj#161

Bug fixes

• [Workspace] Fixed adding a project to a workspace.
  Alessandro Orrù
  Xcodeproj#155

Enhancements

• [Workspace] Added support for file references.
  Kyle Fuller
  Fabio Pelosin
  Xcodeproj#105

Minor Enhancements

• [Constants] Added support for .ipp files as headers.
  Samuel E. Giddins

Bug Fixes

• [Xcodeproj::Project#reference_for_path] Support for string parameter.
  jlj

Breaking

• [Constants] Disable errors on warnings for default build settings
  Fabio Pelosin

Bug Fixes

• [Extension] Fixed build on OS X 10.9's system Ruby (2.0.0).
  Eloy Durán

Bug Fixes

• [Constants] Temporarily reverting the changes to OTHER_LDFLAGS as the were
  creating issues in CocoaPods.
  Fabio Pelosin

Breaking

• [Project] Now the provided path is always expanded on initialization.
  Gordon Fontenot
  #121

Enhancements

• [Constants] Bumped last know SDK versions.
  Fabio Pelosin
  #141
• [Constants] Removed empty OTHER_LDFLAGS setting to match Xcode's behaviour.
  Gordon Fontenot
• [Constants] Bumped last known Xcode version to 5.1.
  Romans Karpelcevs
  #138

Bug Fixes

• [Extension] Fixed intermittent Xcodeproj::PlistHelper.write_plist error.
  Eloy Durán