Define CurveLocation#intersection as a way to retrieve the CurveLocation on the intersecting path when using Path#getIntersections().
Merge branch 'master' of https://github.com/paperjs/paper.js

* 'master' of https://github.com/paperjs/paper.js:
  Define CurveLocation#intersection as a way to retrieve the CurveLocation on the intersecting path when using Path#getIntersections().

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Fix: Update the getIntersections method signature in recursive calls