Command-line and Emacs Calendar Client
1- [x] list/search events 2- [x] add/remove events 3- [x] edit events 4- [x] timezones 5- [x] remove collection module 6 - ref [[https://github.com/ocaml-ppx/ppxlib/issues/481]] cc patrick 7- [ ] add timezone to call date functions and make it required 8- [ ] allow editing recurrence-ids 9- [ ] don't load all calendars into memory to show only one event 10- [ ] support specifying duration 11- [ ] better add/edit event datetime parsing 12 - day of the week 13 - month names 14 - allow editting date or time without touching the other 15 - NB in emacs we use org-mode's datetime picker 16- [x] diagnose events failing to parse [[https://github.com/robur-coop/icalendar/issues/14]] 17- [x] [[https://github.com/robur-coop/icalendar/pull/13][handle RECURRENCE-ID]] 18- [x] [[https://github.com/robur-coop/icalendar/issues/15][RRULE with local datetime]] 19- [ ] CalDAV syncing 20 - Currently, you can use [[https://github.com/pimutils/vdirsyncer][vdirsyncer]] 21- [ ] support querying times as well as dates 22- [ ] custom date/time formatting 23- [ ] support querying regex 24- [ ] support VTIMEZONE 25- [ ] support VALARMS 26- [ ] support VOTODS 27- [ ] support VCARDS 28- [x] server mode 29 - [x] hold =Event='s in-memory instead of parsing them for every =Query= 30- [ ] implement TUI front end with something like [[https://github.com/leostera/minttea][minttea]] 31- [ ] implement an emacs front end, like mu4e to mu 32 - [x] listing, searching, querying 33 - [x] show details 34 - [x] show file 35 - [x] refresh 36 - [x] list possible calendars 37 - [x] add functions and bindings to change query parameters on the fly 38 - [ ] timezone support 39 - [ ] check the date module 40 - [ ] support adding, deleting, and editing events