v0.20.0 (WARNING: ALPHA SOFTWARE)

This is a major breaking release that updates core components of the SDK and its native modules.

In particular:

• The ED25519 address format changed. It's now the first 20-bytes of the SHA256 of the raw public key

• The ports changed to 2665X

• StdTx was updated, along with the signing specification

• There are more commands and structure in the `gaiacli`

• New `x/gov` module for proposals and voting !

• Large upgrades to `x/stake`

See the changelog for comlpete details:

https://github.com/cosmos/cosmos-sdk/blob/080dd5b97a90005cac0c730a81fd1d6864b9fd3e/CHANGELOG.md#0200