Add --case-insensitive (-i)

[jakwings]

ping #85

[jakwings]

Need --smart-case (-S)?

[jakwings]

Rename this flag as --ignore-case?

[sharkdp]

Looks great, thank you very much for your contribution!

-i/--ignore-case is perfect, as it is analogous to ripgrep.

I will properly review this later today.

One thing I was wondering is whether we could hide some of the options from the short -h text (maybe not from the long --help text). I would somehow like to keep the -h text short and concise, with only the most often used options.

Forgot about the argument hiding

[sharkdp]

Ok, we can think about potentially hiding this from the -h text later. Looks great!

Could you rebase this? Let me know if you need any help.

[jakwings]

Rebased.

[sharkdp]

Thank you very much!