set white to transparent in all drawing primitives
remove white borders from drawing primitives
add junction priv, simplify layout in Primitives-table.htm
Primitives-table.htm: add interactive JS "play" thing
start adding explanation of junctions
update Legend to accommodate junctions, add ref to html version
remove white borders from Primitives-table.png to reduce scaling when embedded in .md
add two example labels
up rev date
Merge branch 'master' of https://github.com/meisl/KNOH

Conflicts:
	doc/Drawing-cells-corner-by-corner/Drawing-cells-corner-by-corner.md