Fario

- Fixed a bug with `fario-out --links`
- New option `fario-grep --not-signer`

- New sub-command `fario-account fromsecret`
- New command `fario-grep`
- New command `fario-hubinfo`

- Fixed a bug with fario-signers

- all commands use config.get_config() to read configuration
- configuration can be environment, .env and (new) ~/.fario
- new command fario-config. Prints current config or outputs
sample config.
- some command parameters have changed names to get unified
options naming between commands.
- merged json2fario
- numerous bug fixes, probably new bugs introduced :-)

- Bug fix in fario_account.py

- new option `fario-signers hash --keep-hash`
- breaking change: all options with underscores have been converted to dashes:
ex.: `--with_fnames` --> `--with-fnames`
- New command: `fario-account`. Still ugly, but works.
- six is no longer a requirement