Logger overlapping when running multiple instances

[Hynek Petrak]

Hi,
could you eventually move log file to a folder defined by --loot-dir argument or introduce a new parameter.

Current fixed path logging prevents us from running man spider in multiple instances at the same time.

MANSPIDER/man_spider/lib/logger.py

Line 95 in d8eccfa

 logdir = Path.home() / '.manspider' / 'logs'