Prepare for 0.91 release

Author: jmid

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changes
 
-## NEXT RELEASE (202?-??-??)
+## 0.91 (2025-12-21)
 
 - Add ocamlmig `@@migrate` attributes to deprecated combinator names.
   The following are missing a direct translation:

qcheck-alcotest.opam

@@ -11,7 +11,7 @@ The `qcheck-alcotest` library provides an integration layer for `QCheck` onto
 https://github.com/mirage/alcotest[`alcotest`], allowing to run property-based
 tests in `alcotest`."""
 doc: ["http://c-cube.github.io/qcheck/"]
-version: "0.90"
+version: "0.91"
 tags: [
   "test"
   "quickcheck"

qcheck-core.opam

@@ -10,7 +10,7 @@ QCheck is a QuickCheck inspired property-based testing library for OCaml.
 The `qcheck-core` library provides the core property-based testing API with
 minimal dependendies: It requires only `unix` and `dune`."""
 doc: ["http://c-cube.github.io/qcheck/"]
-version: "0.90"
+version: "0.91"
 tags: [
   "test"
   "property"

qcheck-ounit.opam

@@ -11,7 +11,7 @@ QCheck is a QuickCheck inspired property-based testing library for OCaml.
 The `qcheck-ounit` library provides an integration layer for `QCheck` onto
 https://github.com/gildor478/ounit[`OUnit`], allowing to run property-based
 tests in `OUnit`."""
-version: "0.90"
+version: "0.91"
 tags: [
   "qcheck"
   "quickcheck"

qcheck.opam

@@ -12,7 +12,7 @@ For fewer dependencies and new developments `qcheck-core` is recommended."""
 homepage: "https://github.com/c-cube/qcheck/"
 license: "BSD-2-Clause"
 doc: ["http://c-cube.github.io/qcheck/"]
-version: "0.90"
+version: "0.91"
 tags: [
   "test"
   "property"