Version 1.1.12

[sinclairzx81]

This PR adds an intrinsic length property on Tuple and Array to enable conditional logic to be derived from schema.items.length. The property is provided on Tuple and Array types only as the items length would otherwise be inaccessible to Script.

const A = Type.Script(`[1, 2, 3, 4, 5]['length']`) // TLiteral<5>

const B = Type.Script(`number[]['length']`)        // TNumber