Commita055b24

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FEATURE: Path.get_stroked_extents

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+712

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	`1`	`+New function to get Path's stroked Bbox`
	`2`	`+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~`
	`3`	`+`
	`4`	+A Path is typically drawn by stroking it (with some ``markeredgewidth``), an
	`5`	`+operation which changes its bounding box in a nontrivial way, depending on the`
	`6`	`+Path's joinstyle, capstyle, miterlimit, and shape.`
	`7`	`+`
	`8`	+`~.path.Path.get_stroked_extents` was added to allow computation of the final
	`9`	`+bounding box in pixel/points coordinates of the line, after it has been drawn`
	`10`	`+(and accounting for the joinstyle, capstyle, and miterlimit).`

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`@@ -235,6 +235,20 @@ def degree(self):`
`235`	`235`	`"""Degree of the polynomial. One less the number of control points."""`
`236`	`236`	`returnself._N-1`
`237`	`237`
	`238`	`+@property`
	`239`	`+deftan_in(self):`
	`240`	`+ifself._N<2:`
	`241`	`+raiseValueError("Need at least two control points to get tangent "`
	`242`	`+"vector!")`
	`243`	`+returnself.control_points[1]-self.control_points[0]`
	`244`	`+`
	`245`	`+@property`
	`246`	`+deftan_out(self):`
	`247`	`+ifself._N<2:`
	`248`	`+raiseValueError("Need at least two control points to get tangent "`
	`249`	`+"vector!")`
	`250`	`+returnself.control_points[-1]-self.control_points[-2]`
	`251`	`+`
`238`	`252`	`@property`
`239`	`253`	`defpolynomial_coefficients(self):`
`240`	`254`	`r"""`

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