Add draft of YarnPoint.
Merge branch 'master' into 3d-knitting
Rename YarnD to YarnFlow and add some methods to it.
Add Knitted2.
Change Knitted2 from Connection to Stitch.
Switch from yarn to yarn flow on carriage and needles.
Companion object for YarnStart.
Needle interval now respects direction.
Stream to next yarnflows.
Fix old-school knitting in the KnittingCarriage.
Switch to use YarnFlow instead of yarn during knitting.
Factor nearestYarn out of fair-isle planner.
Add comment.
Fix Global (YarnFlow instead of Yarn).
tuck/part(Direction) methods to easier evaluation.
Rename YarnFlow.nextStream to nexts.
Implement plain knitting that also produces the Knitted2 output.
Fix compile errors in optimizer spec.
Reimplement pattern knitting.
Fix test case for plain knitting.