adding Undo and Redo icons

        propMinSdkVersion = 16

        propTargetSdkVersion = propCompileSdkVersion

        propVersionCode = 1

        propVersionName = '4.4.27'

        propVersionName = '4.4.28'

        kotlin_version = '1.2.51'

        support_libs = '27.1.1'

    }