UnicodeDecodeError: 'charmap' codec can't decode byte on Windows

[aggeloszi]

Hi,

I am testing ssh_commander on a Windows environment and encountered a crash when the program tries to read the configuration file.

Error log:
UnicodeDecodeError: 'charmap' codec can't decode byte 0x81 in position 79: character maps to

Steps to Reproduce:

1. Run ssh_commander on Windows with a servers.yaml file containing non-ASCII characters or created in a Windows environment.
2. Execute: python ssh_commander.py --config servers.yaml list

Possible Cause:
It seems the open() function in ssh_commander.py (likely when loading the config) does not specify an encoding, defaulting to the system's locale (CP1253/charmap) instead of UTF-8.