Fix KeyError when running ``local quickstart`` for the first time

This was due to incorrect parsing of the version number.

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 Note: Breaking changes between versions are indicated by "💥".
 
+## Unreleased
+
+- [Bugfix] Fix KeyError when running ``local quickstart`` for the first time
+
 ## v10.0.0 (2020-06-15)
 
 - 💥[Improvement] Upgrade to Juniper 🍾

tutor/env.py

@@ -302,14 +302,16 @@ def needs_major_upgrade(root):
     """
     current = int(current_version(root).split(".")[0])
     required = int(__version__.split(".")[0])
-    return current < required
+    return 0 < current < required
 
 
 def current_release(root):
     """
     Return the name of the current Open edX release.
     """
-    return {"3": "ironwood", "10": "juniper"}[current_version(root).split(".")[0]]
+    return {"0": "ironwood", "3": "ironwood", "10": "juniper"}[
+        current_version(root).split(".")[0]
+    ]
 
 
 def current_version(root):