Remove debug code and TODO from CurveLocation#isCrossing()

src/path/CurveLocation.js

@@ -387,17 +387,15 @@ var CurveLocation = Base.extend(/** @lends CurveLocation# */{
      * crossing another curve}
      * @see #isTouching()
      */
-    isCrossing: function(_report) {
+    isCrossing: function() {
         // Implementation based on work by Andy Finnell:
         // http://losingfight.com/blog/2011/07/09/how-to-implement-boolean-operations-on-bezier-paths-part-3/
         // https://bitbucket.org/andyfinnell/vectorboolean
         var inter = this._intersection;
         if (!inter)
             return false;
-        // TODO: Make getCurve() and getParameter() sync work in boolean ops
-        // before and after splitting!!!
-        var t1 = this._parameter,
-            t2 = inter._parameter,
+        var t1 = this.getParameter(),
+            t2 = inter.getParameter(),
             tMin = /*#=*/Numerical.CURVETIME_EPSILON,
             tMax = 1 - tMin;
         // If the intersection is in the middle of the path, it is either a
@@ -411,32 +409,14 @@ var CurveLocation = Base.extend(/** @lends CurveLocation# */{
         // emerge from switching to 0 and 1 in edge cases.
         // NOTE: VectorBoolean has code that slowly shifts these points inwards
         // until the resulting tangents are not ambiguous. Do we need this too?
-        var c2 = this._curve,
+        var c2 = this.getCurve(),
             c1 = c2.getPrevious(),
-            c4 = inter._curve,
+            c4 = inter.getCurve(),
             c3 = c4.getPrevious(),
             PI = Math.PI;
         if (!c1 || !c3)
             return false;
 
-        if (_report) {
-            new Path.Circle({
-                center: this.getPoint(),
-                radius: 10,
-                strokeColor: 'red'
-            });
-            new Path({
-                segments: [c1.getSegment1(), c1.getSegment2(), c2.getSegment2()],
-                strokeColor: 'red',
-                strokeWidth: 4
-            });
-            new Path({
-                segments: [c3.getSegment1(), c3.getSegment2(), c4.getSegment2()],
-                strokeColor: 'orange',
-                strokeWidth: 4
-            });
-        }
-
         function isInRange(angle, min, max) {
             return min < max
                 ? angle > min && angle < max

src/path/PathItem.Boolean.js

@@ -136,7 +136,8 @@ PathItem.inject(new function() {
     }
 
     /*
-     * Creates linked lists between intersections through their _next property.
+     * Creates linked lists between intersections through their _next and _prev
+     * properties.
      *
      * @private
      */