diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
new file mode 100644
index 0000000..cc4d48a
--- /dev/null
+++ b/.github/pull_request_template.md
@@ -0,0 +1,6 @@
+Checklist
+=========
+(Feel free to delete this text once you went through it.)
+
+- Did you add an entry to the `Changes` file?
+
diff --git a/Changes b/Changes
new file mode 100644
index 0000000..f138b83
--- /dev/null
+++ b/Changes
@@ -0,0 +1,7 @@
+Revision history for Cro::HTTP
+
+{{NEXT}}
+    - Add two `Response` convenience methods: `not-supported` (500) and
+      `server-error` (505).
+    - Add support for HTTP/2 cookie headers.
+    - Be more lenient when receiving Cookies with duplicate parameters.
diff --git a/META6.json b/META6.json
index a71fdb0..4965839 100644
--- a/META6.json
+++ b/META6.json
@@ -2,6 +2,7 @@
   "name": "Cro::HTTP",
   "description": "Asynchronous HTTP, both client and server side. Includes HTTP/2.0 support.",
   "version": "0.8.9.1",
+  "api": "0",
   "auth": "zef:cro",
   "perl": "6.*",
   "authors": [