* remove --json flag from all commands and CLIContext
gaiad tendermint show-{address,validator} now take --machine-parseable/-m
for machine parseable output.
Closes: #3249
* Revert machine-parseable thing
* --chain-id must be a persistent flag to be successfully read from config
* Prevent panic when not enough arguments
* Add docs on gaiacli config
* Small tweak
- New keys add --multisig flag to store multisig keys
locally.
- New multisign command to generate multisig
signatures.
- New sign --multisig flag to enable multisig mode.
- Add multisig transactions support in ante handler.
- gaiad add-genesis-account can now take both account
addresses and key names.
Closes: #3198