preserve order in multi cloze type answer; bump version

anki/__init__.py

@@ -30,6 +30,6 @@ if arch[1] == "ELF":
     sys.path.insert(0, os.path.join(ext, "py2.%d-%s" % (
         sys.version_info[1], arch[0][0:2])))
 
-version="2.0.21" # build scripts grep this line, so preserve formatting
+version="2.0.22" # build scripts grep this line, so preserve formatting
 from anki.storage import Collection
 __all__ = ["Collection"]

aqt/reviewer.py

@@ -434,7 +434,14 @@ Please run Tools>Empty Cards""")
             return txt
         matches = [noHint(txt) for txt in matches]
         if len(matches) > 1:
-            txt = ", ".join(list(set(matches)))
+            arr = []
+            seen = {}
+            for m in matches:
+                if m in seen:
+                    continue
+                seen[m] = 1
+                arr.append(m)
+            txt = ", ".join(arr)
         else:
             txt = matches[0]
         return txt