Stdlib examples: Produce Exchange WIP

[matthewhammer]

The Produce Exchange is functional spec, a prototype design, and a WIP Dapp to drive the development of DFINITY, ActorScript, and the standard library of ActorScript.

This PR is a WIP implementation of the Produce Exchange in ActorScript, including whatever standard library features are needed along the way.

[nomeata]

I am always confused when someone has a PR that is marked as “WIP”, but then an explicit review is requested. Do you just want to ping us? Then saying @matthewhammer should be sufficient (I am subscribed to the whole repository anyways). Or is this an indication that the PR is done so far and ready for review, but the title was just not updated?

[matthewhammer]

Good questions.

I guess I want everyone to read this code, eventually. It's not urgent though. It's showing stuff that I want to discuss in the meeting today, and in future meetings.

It doesn't need to be master yet, though, so thus I included the "WIP" acronym.

I could have written this earlier to make this all clear; sorry.

[crusso]

virtual -> virtue

[paulyoung]

GitHub allows draft PRs now :) https://github.blog/2019-02-14-introducing-draft-pull-requests/