I have some lightweight revision tracking on some models.  I generate a 
diff based on the history of the object (via inspector).

a limitation I just realized, is that this history only dates back to the 
most recent flush() -- it doesn't date back to the initial load.

are there any existing facilities that would let me access the originally 
loaded attributes -- prior to any flushes ?

thankfully i don't need this functionality, my code works fine as-is. i'd 
just like to be safe and use anything better if available.

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