More helpfull messages for not yet implemented knittings.
Fix double-bed fair isle to use correct double bed settings and to not fail when knitting rows with only one color.
Reformat.
Double bed knitting variants listed (not yet implemented more than plain and part).
Implement double bed IiIi knitting.
Correct double bed fair isle pattern knitting (correct settings for double bed).
Fix drawing of part and P/R lever on double bed (were inverted).
Fix default needle takeback on double bed.