Path.ts

Note not actually vendored yet as we haven’t yet published this package.

Goals:

1. Chainable
2. Robust
3. noop if the result of a requested operation has already been done.
4. Delightful
5. Conforms to principle of least surprise
6. Consistent

Based on mxcl/Path.swift

PathUtils.ts

Companion library to Path.ts. Contains common path-oriented operations that don't specifically belong on a Path object.