Bump READ_VERSION of BlockCompletionTransformer to 1.

Signed-off-by: Tomasz Gargas <tomasz@opencraft.com>

lms/djangoapps/course_api/blocks/transformers/block_completion.py

@@ -12,7 +12,7 @@ class BlockCompletionTransformer(BlockStructureTransformer):
     """
     Keep track of the completion of each block within the block structure.
     """
-    READ_VERSION = 0
+    READ_VERSION = 1
     WRITE_VERSION = 1
     COMPLETION = 'completion'