v0.3.0

add optional versioning of charts

---

Here's an example of a project's configuration file:

apiVersion: v1
charts:
  stable/factorio:0.2.0:
    resources:
      requests:
        memory: 1024Mi
        cpu: 750m
    factorioServer:
      name: {{ MY_SERVER_NAME | default:"hello world!" }}

  stable/minecraft:
    minecraftServer:
      difficulty: hard

You can optionally pin your chart to a specific version, by appending :x.y.z
to the chart name.