Initial version PoE module

[alpe]

Proof of Engagement (PoE)

This module contains the Proof of Engagement (PoE) contracts and integration points. See
the Whitepaper for more details about PoE.

This module provides first class support for PoE:

• Bootstrap and contract instantiation
• Query and CLI support
• Genesis import/ export
• Integration tests

Contracts

• tg4-group - engagement group with weighted
  members
• tg4-stake - validator group weighted by
  staked amount
• valset - privileged contract to map a
  trusted cw4 contract to the Tendermint validator set running the chain
• mixer - calculates the combined value of
  stake and engagement points. Source for the valset contract.

Command line interface (CLI)

• Commands

  tgrade tx poe -h

• Query

  tgrade query poe -h

Reviewer

Please see #53

[ethanfrey]

Cool. Looking forward to review.

[ethanfrey]

Just got to x/poe/bootstrap, but submitting the first part of the review now

[ethanfrey]

Left to do:

poe: bootstrap, cli, client
twasm: all

[ethanfrey]

Oof, this x/poe/client code was copied from the sdk with minor changes, right?
It is sooo much more convoluted than your code. Let's clean it up a bit or at least make an issue to do so. I can barely follow the flow of the gentx logic

[ethanfrey]

Finally finished looking at changes to x/twasm.
Looks good.

[ethanfrey]

Looks good. Thanks for the fixes.

Good to merge