This commit replaces github.com/antzucaro/matchr (GPL2, introduced in v2.7.0)
with github.com/xrash/smetrics (MIT License).
Fixes issue 1404
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
While `HideHelp` hides both `help` command and `--help` flag, `HideHelpCommand`
only hides `help` command and leave `--help` flag as-is.
The behavior of `HideHelp` is untouched in this commit.
Fix#523
Replace #636
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>