public void setRoundedEdges(boolean isEnabled) {
		mRoundedEdges = isEnabled;
		if (mRoundedEdges) {
			mArcPaint.setStrokeCap(Paint.Cap.ROUND);
			mProgressPaint.setStrokeCap(Paint.Cap.ROUND);
		} else {
			mArcPaint.setStrokeCap(Paint.Cap.SQUARE);
			mProgressPaint.setStrokeCap(Paint.Cap.SQUARE);
		}
	}
Sets a listener to receive notifications of changes to the SeekArc's
progress level. Also provides notifications of when the user starts and
stops a touch gesture within the SeekArc.

@param l
           The seek bar notification listener

@see SeekArc.OnSeekBarChangeListener
SeekArc_library/src/com/triggertrap/seekarc/SeekArc.java