Merge 0.8 into cosmos-sdk:master PR

[ethanfrey]

Summary

There is an open PR that updates to a recent cosmos-sdk master and gaia release (from late April). However, it is based on wasmd 0.7.2.

We will release wasmd 0.10 based on cosmos-sdk 0.39/master so we need to merge these all together. Let's do this in a few steps. This is the first one to get cosmwasm 0.8 contracts running on cosmos-sdk:master

TODO:

• Merge v0.8.0 into Update gaia to master #108 and resolve conflicts
• Ensure it builds properly (updating any code that refers to amino, etc)
• Ensure all tests pass

You can make a new branch and/or new PR to track this (by #129 this should be labelled 0.10)

Problem Definition

Proposal

---

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned

[ethanfrey]

This is obsolete as we have chosen the approach of #138