Python-exact-online

Added mandatory filtering:
https://support.exactonline.com/community/s/knowledge-base#All-All-DNO-ReleaseNote-rn-2107-rn-appcenter-mandatoryfiltering

Raise error when cache is emptied because refresh token is expired
Useful for catching this exception and planning your logic accordingly

Fixed authentication bug when refresh token is expired

Small fixes: check json before error parsing and removed unused print statement.

Added support for __next to retrieve lists larger than 60 entries

Displaying IOError on cache save