constructor(size /*int*/, bits) {
			if (undefined === size) {
				this.size = 0;
				this.bits = new Int32Array(1);
			}
			else {
				this.size = size;
				if (undefined === bits || null === bits) {
					this.bits = BitArray.makeArray(size);
				}
				else {
					this.bits = bits;
				}
			}
		}
<p>A simple, fast array of bits, represented compactly by an array of ints internally.</p>

@author Sean Owen