lograptor/logmap.py - revised function 'check_log_datetime_range' (ranamed to 'check_logfile_stat') to use st_ctime only on Windows platforms. Otherwise use only mtime and discard only older logs.

lograptor/__init__.py: Added initial and final datetime filtering for events in the log process cycle. Fix a call to function 'set_file_mtime'.

lograptor/logheader.py: Fix a bug in set_file_mtime(), rename set_file_mdate() into class LogHeader.