1.5.7

• Changed behaviour in get_previous_business_day_before_today() function. None input means days argument is set to zero and not raise Exception. This will eliminate scenario that I earlier believed was bug
• Simplified Github workflows install of Poetry
• Cut down functions in _risk.py module to simplify code. Moved code to inline in main modules instead
• Widened acceptance on holidays dependency while silencing its DeprecationWarning
• Widened acceptance on numpy dependency and checked that project can use numpy 2.0.0
• improved exception message on date_fixer.offset_business_days
• Removed utc timezone setting where datetime.date.today() used. Aimed for local timezone. Do not believe it will impact anything