Release 1.22.1

🚧 Watch out! There's a known regression in this release! #850 🚧

Fixed

• Hide output of hidden commands on man pages in urfave/cli/pull/889 via @crosbymichael
• Don't generate fish completion for hidden commands urfave/cli/pull/891 via @saschagrunert
• Using short flag names for required flags throws an error in urfave/cli/pull/890 via @asahasrabuddhe

Changed

• Remove flag code generation logic, legacy python test runner in urfave/cli/pull/883 via @asahasrabuddhe
• Enable Go Modules support, drop support for Go 1.10 add support for Go 1.13 in urfave/cli/pull/885 via @asahasrabuddhe