Added function to retrieve all holidays between two dates.
Description from docblock:
/**
* getInRange method allows you to pick holidays in a range of dates,
* - dates are inclusive.
* - dates are swappable, lower date could be passed as second argument.
* - dates could be a CarbonInterface or a string.
* - acceptable strings formats are 'Y-m-d' or 'Y-m' or 'Y'
* - if passed string is 'Y-m' or 'Y' it will be converted to first(from) / last{to} day of the month(from) / year(to)
* E.g. to retrieve all holidays in between
* - 2020-01-01 and 2024-12-31, you could use: getInRange('2020-01-01', '2024-12-31'), getInRange('2020-01', '2024-12') or getInRange('2020', '2024')
* - 2024-06-01 and 2025-05-30, you could use: getInRange('2024-06-01', '2025-05-30'), getInRange('2024-06', '2025-05')
*/
Added function to retrieve all holidays between two dates.
Description from docblock: