Adding release.yml to autogenerate release notes on github

This feature doesn't work great, but it does let you do a test release to see which PRs have been merged since the last tag.  Maybe in future github will make it more flexible too.

.github/release.yml

@@ -0,0 +1,34 @@
+# .github/release.yml
+
+changelog:
+  exclude:
+    labels:
+      - ignore-for-release
+    authors:
+      - octocat
+  categories:
+    - title: Breaking Changes ⚠️
+      labels:
+        - Semver-Major
+        - breaking-change
+        - api
+    - title: New Features 🎉
+      labels:
+        - Semver-Minor
+        - enhancement
+        - new
+    - title: Maintenance 🛠
+      labels:
+        - Semver-Patch
+        - maint
+    - title: Documentation 📗
+      labels:
+        - doc
+        - example
+    - title: Big Fixes 🐛
+      labels:
+        - Semver-Patch
+        - bug
+    - title: Other Changes ❓
+      labels:
+        - "*"