Allow plusBusiness etc to accept a custom holiday matcher as param

[hdoan-codaio]

In my code, I give user a function to select optional holidays. It's a lot more clean & less prone to error when I can pass these to the methods like plusBusiness, compared to trying to set/unset the matcher each time.

[amaidah]

Can you give an example?

[owstron]

The current signature is plusBusiness({ days = ONE_DAY } = {})

I think an example would be plusBusiness({ days = ONE_DAY } = {}, customMatchers = { businessDays: [], holidayMatchers: [] } = {})