Proposed `jessie-std` standard library

[michaelfig]

This issue is to track a proposed standard library for Jessie, which can be relied on for any Jessie environment (such as sufficiently-advanced plain Javascript implementations, SES and jessica), to allow Jessie code to run unmodified across platforms.

Following the example of SES's magical treatment of import harden from '@agoric/harden', I would like to propose that Jessie environments provide a magical jessie-std library with a fallback implementation actually hosted in NPM for code not running in a Jessie-specific interpreter or SES.

So, each Jessie module would do something like:

import { makeCompartment,.... makeWeakSet} from 'jessie-std';

The following is a checklist of the endowments that jessica would need. They will be checked off when they're implemented in the standard library.

• [ ] makeCompartment (not yet discussed, but replaces the old confine and confineExpr)
• [ ] protect and suspect (discussed in #43)
• [ ] makeMap (originally discussed in #17)
• [ ] makePromise (not yet discussed, but implied by the Jessie whitelist)
• [ ] makeSet (#17)
• [ ] makeWeakMap (#17)
• [ ] makeWeakSet (#17)

Thoughts?

[michaelfig]

Note: I renamed @agoric/jessie to just jessie-std, as we don't want Jessie to be wedded to the Agoric implementation.

@coder-mike especially, take note.

[michaelfig]

Done and implemented as packages/stdlib.