exinst-0.1.1: CHANGELOG.md

# Version 0.1.1

* Relax upper bound on `singletons` dependency.

* `withSome{1,2,3,4}Sing` brings `SingI` instances to scope.

* Generalized the `(* -> Constraint)` parameter in `Dict{1,2,3,4}`
  to `(k -> Constraint)`.


# Version 0.1

* Initial release.