Output compared from clap3 to the current structopt impl. Last test shows aliases still working

Small regression using InferSubcommands is that you cannot specify how to resolve ambiguous cases.

Originally, we supported atuin history l to be atuin-history-list and atuin history la to be atuin-history-last. The InferSubcommands setting just makes the base case an error

For those kind of conflict, alias will have to do. So add l as alias to list.

@ellie it's wholesome that my first PR here #1 was using structopt instead of clap and very soon we'll be reverting that 😅

@ellie it's wholesome that my first PR here #1 was using structopt instead of clap and very soon we'll be reverting that 😅

Awww I love that haha! Come full circle 😁

Just rebased and updated to the lastest release candidate (rc7), as well as merge in support for shell completions (addressing #249)

Remind me to complete this

reminder that this can be closed due to #289