Update allocator.py to handle incoming students' current-year specification correctly

app/allocator.py

@@ -58,7 +58,9 @@ def parse_year_to_int(r):
     if isinstance(r, (int, float)) and not np.isnan(r):
         return int(r)
     s = str(r).lower().strip()
-    if "first" in s or "1" in s or "incoming" in s:
+    if "incoming" in s:
+        return 0
+    elif "first" in s or "1" in s:
         return 1
     elif "second" in s or "2" in s:
         return 2