Add double bed carriage.
Add double bed needles.
Add needle takebacks to double-bed.
Begun implementing of double bed knitting.
Refactoring of KnittingCarriage to be more scalable.
Fix E knitting with no takeback (NoStitch instead of EmptyStitch.
Begun writing spec for KKnitting.
Test needle state in KKnittingSpec.
Add spec for part-knitting and a bugfix.
Add test for knitting with holdingCamLever==H.
Add specs for MC knitting and fix a bug.
Get rid of old tests.
Add part knitting for the double bed.
Fix ThreadYarn step for double bed.
Double bed knits purl stitches.
Add MoveToDoubleBed step.
Plus and Minus on needle so we no longer need to use needle.index as much.
Add step/Basics-plan to change K assembly.
Add round knitting planner.
Cast on and knitting no longer return the yarn-flow.