shift may need to unset shifted item in data array

[patternleaf]

var b = new CBuffer(10);
b.push(1, 2, 3, 4, 5);
b.rotateLeft();
b.sort();
b.toArray();

=> [1, 1, 2, 3, 4]

Seems the culprit is the use of shift in rotateLeft, which moves the start index but leaves the shifted item in the underlying array. Explicitly setting that array index to undefined seems to fix the above. Not sure if it would have other consequences.

Thanks for the implementation!

[trevnorris]

Thanks for the bug report. I'll look into it.