XcodeGen now supports "External Build Tool" target type (internally called
PBXLegacyTarget in Xcode). This is implied when the target provides a
`LegacyTarget` field in its spec.
PBXLegacyTargets are just like normal targets but the `isa` is different
and they have a notion of a buildTool. Most of the target logic doesn't
have to change.
* Add commandlineArguments to XcodeGenKit Scheme specifications
* Update xcproj reference, format code, cleanup usage of
commandlineArguments in ProjectGenerator
* Update docs, CHANGELOG and equality checks in Scheme.swift
* Doc update
* Update fixture tests to have command line arguments. Fix remaining issue
with Scheme creation through "Test Scheme"
* Resolves#169, added support for codeCoverageEnabled flag in target schemes.
* #170@yonaskolb code review fix and docs update.
* More #170@yonaskolb code review fix.
* Using gatherCoverageData instead of codeCoverageEnabled naming, thanks @kastiglione.
* Now using xcproj 1.5.0
* Another #170@yonaskolb code review fix.
