update codecov config, update changelog

Author: jcmgray

.codecov.yml

@@ -2,6 +2,7 @@ codecov:
   require_ci_to_pass: yes
 
 coverage:
+  range: 50..100
   status:
     project:
       default:
@@ -12,3 +13,6 @@ coverage:
     changes: false
 
 comment: off
+
+github_checks:
+  annotations: false

docs/changelog.md

@@ -4,7 +4,7 @@ Release notes for `xyzpy`.
 
 
 (whats-new-1-3-0)=
-## v1.3.0 (unreleased)
+## v1.3.0 (2026-03-26)
 
 **New features:**