Update docs

scripts/generate/helpers/sanitize.js

@@ -0,0 +1,5 @@
+module.exports = {
+  address: expr => `and(${expr}, shr(96, not(0)))`,
+  bool: expr => `iszero(iszero(${expr}))`,
+  bytes: (expr, size) => `and(${expr}, shl(${256 - 8 * size}, not(0)))`,
+};