Added release note page for 0.44.

docs/markdown/Release-notes-for-0.44.0.md

@@ -0,0 +1,16 @@
+---
+title: Release 0.44
+short-description: Release notes for 0.44 (preliminary)
+...
+
+# New features
+
+This page is a placeholder for the eventual release notes.
+
+Notable new features should come with release note updates. This is
+done by creating a file snippet called `snippets/featurename.md` and
+whose contents should look like this:
+
+    # Feature name
+
+    A short description explaining the new feature and how it should be used.