Import date_times before 1900-01-01

[HenrikSpa]

2018-08-16T13:34:17 1 Traceback (most recent call last): File "/home/henrik/.qgis2/python/plugins/midvatten/tools/midvatten_utils.py", line 1310, in func_wrapper ret = func(*args, kwargs) File "/home/henrik/.qgis2/python/plugins/midvatten/tools/midvatten_utils.py", line 1481, in new_func result = func(*args, *kwargs) File "/home/henrik/.qgis2/python/plugins/midvatten/tools/import_data_to_db.py", line 364, in new_func result = func(args, kwargs) File "/home/henrik/.qgis2/python/plugins/midvatten/tools/import_general_csv_gui.py", line 238, in start_import file_data = self.reformat_date_time(file_data) File "/home/henrik/.qgis2/python/plugins/midvatten/tools/import_general_csv_gui.py", line 318, in reformat_date_time if rownr == 0 or all([date_utils.reformat_date_time(row[_colnr]) for _colnr in colnrs_to_convert])] File "/home/henrik/.qgis2/python/plugins/midvatten/tools/date_utils.py", line 159, in reformat_date_time new_datestring = datetime.datetime.strftime(datetime.datetime.strptime(astring, date_format), outformat) ValueError: year=1899 is before 1900; the datetime strftime() methods require year >= 1900