also drop support for Coq 8.13

.gitlab-ci.yml

@@ -77,16 +77,9 @@ build-coq.8.15.2:
     DENY_WARNINGS: "1"
 
 build-coq.8.14.1:
-  <<: *template
-  variables:
-    OPAM_PINS: "coq version 8.14.1"
-    DENY_WARNINGS: "1"
-    OCAML: "ocaml-base-compiler.4.07.1"
-
-build-coq.8.13.2:
   <<: *template
   <<: *branches_and_mr
   variables:
-    OPAM_PINS: "coq version 8.13.2"
+    OPAM_PINS: "coq version 8.14.1"
     DENY_WARNINGS: "1"
     OCAML: "ocaml-base-compiler.4.07.1"

CHANGELOG.md

@@ -3,7 +3,7 @@ API-breaking change is listed.
 
 ## std++ master
 
-Coq 8.12 is no longer supported by this release.
+Coq 8.12 and 8.13 are no longer supported by this release.
 
 - Rename `difference_difference` -> `difference_difference_l` and
   `difference_difference_L` -> `difference_difference_l_L`, add

README.md

@@ -45,7 +45,9 @@ Notably:
 
 This version is known to compile with:
 
- - Coq version 8.13.2 / 8.14.1 / 8.15.2 / 8.16.1
+ - Coq version 8.14.1 / 8.15.2 / 8.16.1
+
+Generally we always aim to support at least the last three stable Coq releases.
 
 ## Installing via opam
 

coq-stdpp.opam

@@ -33,7 +33,7 @@ tags: [
 ]
 
 depends: [
-  "coq" { (>= "8.13" & < "8.18~") | (= "dev") }
+  "coq" { (>= "8.14" & < "8.18~") | (= "dev") }
 ]
 
 build: ["./make-package" "stdpp" "-j%{jobs}%"]