Pipeline Chain Operators (&& / ||) (#192)

* Pipeline chain operators

* Add UX

* *nix

* Explain ambiguity

* Newline

* Make examples clearer

* Add throw example

* Add more examples

* Final edits

* Update wording

* Update 1-Draft/RFC0000-Chain-Operators.md

Co-Authored-By: Joey Aiello <joeyaiello@users.noreply.github.com>

* Remove statement chains

* Remove line pre-continuations

* Update test link

* Prepare Pipeline Chain Operators (RFC0046) for acceptance

Author: rjmholt