function setBit( value, offset ) {
	return ( value | bitMask( offset ) )>>>0; // asm type annotation
}
Sets a bit.

@private
@param {NonNegativeInteger} value - value
@param {NonNegativeInteger} offset - bit offset (right-to-left)
@returns {NonNegativeInteger} updated value

@example
var y = setBit( 8, 2 );