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