From Fullcalendar Blog Article
A year after the project first began, version 4 is finally released. A tremendous amount of work went into it. To summarize the advancements over v3:
jQuery has been removed
Moment has been removed and time zones have been rethought
The API is more modern
Functionality is broken into lightweight plugins
Plugins have been added for recurring events, Moment, and Luxon
Touch interactions and scrolling work better
Lots of internal refactoring that has already made development much faster
Hey @MattiCerio, unfortunately I will not be supporting version v4. I'm not using the fullcalendar in my projects anymore so I have no incentive to work on it.
From Fullcalendar Blog Article A year after the project first began, version 4 is finally released. A tremendous amount of work went into it. To summarize the advancements over v3:
V4 Release Notes and Upgrade Guide