Update: Upgrade clap to V3.1.6 & replace deprecated code in main.rs

[PJC-64]

Hi,

while looking into adding the 'status' functionality, I received lots of warnings that clap 3.0.x functionality was now deprecated.

I have updated Cargo.toml & main.rs to use clap V3.1.6 and the new 'Command' functionality in my fork.

I can provide a PR with the changes if wanted.

-Paul (@PJC-64)

[drupol]

Hi,

Yes, a PR is much appreciated ;)

Thanks.

[Amanse]

Can be closed now :)