Upgrade ndarray and other deps

[Dirreke]

Bump ndarray from 0.15.6 to 0.16.0
Bump approx from 0.4.0 to 0.5
Bump criterion from 0.3.4 to 0.5.1

[Dirreke]

sorry, I forget to update tests file. I will fix it later today

[Dirreke]

Fixed, Let's rerun CI

[bluss]

hi - I was here to press the ci button but I was wondering if @termoshtt wants to chime in too

[Dirreke]

It seems like we should bump MSRV. Or limit the version of clap. Which one would you like?
I could open a new PR to fix it.

[govinda-kamath]

Hi - any update on this. This seems to be holding back ndarray updates downstream?

[govinda-kamath]

Suggested change

	version = "0.16.0"
	version = ">=0.15.0, <0.17"

This would make it easier to use as a library downstream

[Garfield100]

@bluss @termoshtt @Dirreke
Bumping this because this issue is quite painful while the fix is simple and a PR is already open and very close to being mergeable.
This crate hasn't received an update in 2 years and is currently unusable with other parts of the ecosystem. Don't let all the hard work which went into ndarray_linalg go to waste :)

[bluss]

I have been added as a crate owner for this crate on crates.io since today, thanks to @termoshtt for the transfer.

I will help get the next release out as a transition thing - but those that need this package are hereby invited to become maintainers.

[Dirreke]

Awesome! Thanks for your contribution. I will close this PR.