bump to v0.5.0_20230805

- logging level can be selected now in config file
- log size, backups defined in config file close #16
- power_events, bat_events, sys_fault are now monitored close #18
- events are human readable (system faults only) close #17
- cells details are logged in 'battery_events.log' when a selected event happened
- pytes-serial events are now logged in 'pytes_serial.log'
- no of events since script started are reported in section serial_stat of JSON file
- old event.log is deprecated

Author: chinezbrun