1.13.0

Enhancements

• Add PBXShellScriptBuildPhase dependency file.
  Dimitris Koutsogiorgas
  #705

• Add to_h alias to Config
  Eric Amorde
  #710

• Update PBXProject known_regions attribute to include 'Base'
  Liam Nichols
  #9187

Bug Fixes

• Add support for productRef attribute for PBXTargetDependency.
  Dimitris Koutsogiorgas
  #715

• Add support for runOncePerArchitecture attribute for PBXBuildRule.
  Alon Karasik
  #712