• Richard van der Hoff's avatar
    Make space in the session pickle for chain index · 8dd3c182
    Richard van der Hoff authored
    Keeping track of the chain index is a useful thing to do, but is only required
    if we've enabled diagnostics. Extend the session pickle format to make a space
    for it, so that pickles can be transferred between the logging_enabled branch
    and the master branch without loss of information.
    Also add some tests for session pickling which explicitly check that we can
    unpickle both formats of pickle.