Use `getpid` and `get_ident` to identify processes/threads instead of `mpi4py`
0.3.6
Bugfixes
0.3.5
Fixes an issue where a new databases wasn't initialized when the user calls `save_db`
0.3.4
Minor tweaks to the intercept wrapper, causing it to preserved the function signature
0.3.3
Bugfix for loader: reset `db.root` whenever we run `callmonitor.load`
0.3.2
Bugfix: clear input descriptor of all custom data before pickling -- not doing this artificially inflates the size of the pickle, and might prevent unpickling in the future (if the contained data types don't match installed versions).