Add alternative TIMEFORMAT with milliseconds
Sometimes, coscine returns datetimes with milliseconds at the end, like
endDate: "2022-01-17T11:24:09.297"
This tries parsing datetimes with an added "%.f" in the end if the default format fails. If possible, it might be a better change to ensure all datetimes returned by the server have the same format.
Fixes #20 (closed)