[#234] Add concurrent primitives working with State

[Martoon-00]

Problem: existing modifyTVar' is not pretty convenient. You need to e.g. remember the order of arguments, and if several transformations are required, composing them neatly may be difficult.

Solution: provide methods working with State, not a lambda. This way one can write down modifications in do-block which is convenient.

Description

Related issues(s)

Fixed #234 by adding the respective methods.

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[gromakovsky]

xrefcheck fails because universum is no longer in Nightly. Good to know, I'll check it.

Started working on it here: https://github.com/serokell/universum/pull/252 But it will probably take a while and involve a breaking change, so feel free to ignore that link for now and merge this PR. If you do it soon, let's set version to 1.7.3 and release it?

[Martoon-00]

Thanks for looking into this!

xrefcheck fails because universum is no longer in Nightly. Good to know

Hmm, that was indeed an interesting way to check that we are not dropped from LTS.

If you do it soon, let's set version to 1.7.3 and release it?

Yep. Should I bump the version in this PR?

[gromakovsky]

Yep. Should I bump the version in this PR?

Yes, I propose to do it here and release the new version. I can also make you a maintainer on Hackage and you'll be able to upload it yourself. Actually I'll just go ahead and do it even if you don't want :peka:

[Martoon-00]

Uploaded )

Looks like it.