Canvas and canvas context wrapper. Supplies a chainable api of canvas methods, and command grouping.
var gtx=gesso(document.createElement('canvas'));
gtx.beginPath()
.miterLimit(10)
.line({
cap: "round",
join: "miter"
})
.shadowColor("transparent")
.moveTo(0, 0)
.line({
to: [20, 20],
width: 40
});