new release

update to go 1.22

add show weekday option (by @corite)

First support for UNTIL

fix SabreDAV/Nextcloud

fix passwdCmd being ignored

fix README

Allow external password provider

fix Google readonly calendars. RW does and will not work though.

fix HTTP call for readonly servers

increment version in defines

fix spacing for additional info

support attendees in additional info

fix spaces in appointment description

fix description newlines

bugfix for faulty deletion behaviour

fix deletion behaviour

adjust colorBlock

highlight current day's appointments

fix timezone parsing