gui - Super minimal, rock-solid foundation for concurrent GUI in Go.

	Commit message (Collapse)	Author	Age	Files	Lines
*	lay/strain: simplify Solver internal synchronization	Sam Anthony	12 days	1	-9/+51
\| \| \| \| \| \| \| \|	Replaced the AddConstraint() and Solve() methods' request/reply channels, used a mutex instread. Solver now closes the fieldConstrs channel automatically; removed the Close() method. Generally tidied up.
*	lay/strain: represent rectangles as (origin, size)	Sam Anthony	12 days	1	-0/+105