Remove `Any#ref`

Removed

• Kill Any#ref - it's really subjective, allow aliasing separately using meta and serialiser/deserialiser

Omit `undefined` object keys

Fixed

• Remove undefined object keys from output

Intersection Merging

Changed

• Removed Key type
• Add a Uuid type
• Make type value a title-cased string
• Rename Accepted and Rejected to Whitelist and Blacklist
• Add _isType structural type check (for selecting branches without validation)
• Merge the results of intersection types together
• Return the result of validation instead of input value (now intersections properly intersect results)
• Replaced object patterns with propertyTypes

Return `root` object

Changed

• Return root until intersections are resolved

Replace `enum` with types

Changed

• Remove enum from any, replace with uses and new Types.{Accepted,Rejected}

Export Path Utils

Changed

• Export path utils for re-use

Correct import paths

Changed

• Explicit index.d.ts import, for working with Typings

Refactor validation API

Changed

• Make compile a function that takes a schema and returns an async function
• Add support for object property patterns