Potential Changes Queue

### WIP

https://github.com/bloomberg/pasta-sourcemaps/compare/master...tchetwin:pasta-esm

### Breaking

- [X] Drop node 8 & 10 support
- [x] eslint@7
- [x] @typescript-eslint/*@3 [source](https://github.com/typescript-eslint/typescript-eslint/releases/tag/v3.0.0) (although it's fine so far)
- [X] [Package entry points](https://nodejs.org/docs/latest-v12.x/api/esm.html#esm_package_entry_points) - node >= 12?
- [X] Ship ESM - (not a breaking change if dual-shipping)
- All LTS Node versions now support ESM

### Other

- [x] Update `typedoc` and `typedoc-plugin-sourcefile-url` to bump `highlight.js` to v10 as per #35