Changed description from

A lightweight, structured-concurrency library.
This package comes in two variants:
* "Ki" exposes the most stripped-down variant; start here.
* "Ki.Implicit" extends "Ki" with an implicit context that's used to
propagate soft cancellation signals.
Using this variant comes at a cost:
* You must manually add constraints to propagate the implicit context to
where it's needed.
* To remain warning-free, you must delete the implicit context constraints
where they are no longer needed.
If you don't need soft-cancellation, there is no benefit to using this
variant, and you should stick with "Ki".
Because you'll only ever need one variant at a time, I recommend using a
<https://www.haskell.org/cabal/users-guide/developing-packages.html#pkg-field-mixins mixin stanza>
to rename one module to @Ki@ while hiding the others. This also simplifies the
process of upgrading from "Ki.Implicit" to "Ki" if necessary.
@
mixins: ki (Ki.Implicit as Ki)
@

A lightweight, structured-concurrency library.

This package comes in two variants:

* "Ki" exposes the most stripped-down variant; start here.

* "Ki.Implicit" extends "Ki" with an implicit context that's used to
propagate soft cancellation signals.

Using this variant comes at a cost:

* You must manually add constraints to propagate the implicit context to
where it's needed.

* To remain warning-free, you must delete the implicit context constraints
where they are no longer needed.

If you don't need soft-cancellation, there is no benefit to using this
variant, and you should stick with "Ki".

Because you'll only ever need one variant at a time, I recommend using a
<https://www.haskell.org/cabal/users-guide/developing-packages.html#pkg-field-mixins mixin stanza>
to rename one module to @Ki@ while hiding the others. This also simplifies the
process of upgrading from "Ki.Implicit" to "Ki" if necessary.

@
mixins: ki (Ki.Implicit as Ki)
@