preparing for release 0.9.0

docs/release_notes/v0.9.0.md

@@ -0,0 +1,22 @@
+# v0.9.0
+
+This update brings with it some version upgrades and changes how
+required fields are calculated for minimum samples. That is
+samples that satisfy the minimum required fields present in a CRD.
+
+It will render fields better.
+
+Also fixed a problem where `{}` would not be rendered in case
+a top level object was required but didn't had any more required
+fields it self. In that case, it would be rendered as `field:` and
+that's it. Which made the schema fail.
+
+Now, a `{}` is correctly put after it if it's an object. For example:
+
+```yaml
+apiVersion: v1
+kind: Whatever
+spec:
+  fields: {}
+```
+