What's Changed
* Add PBXBuildRule and support for certain single character strings by dnicolson in https://github.com/Serchinastico/Kin/pull/108
* Make file references optional by dnicolson in https://github.com/Serchinastico/Kin/pull/111
* Allow wrapLines in file references by dnicolson in https://github.com/Serchinastico/Kin/pull/112
* Add PBXShellBuildPhase by dnicolson in https://github.com/Serchinastico/Kin/pull/113
* Allow dollar signs in scripts by dnicolson in https://github.com/Serchinastico/Kin/pull/114
**Full Changelog**: https://github.com/Serchinastico/Kin/compare/2.1.8...2.1.9