5 months ago, when I upgraded confluence 3.4.9 to 5.4.1, the page containing Calendar, was not working and we upgraded to Team Calendar plugin but, today when I again upgraded it in my local following the same path i.e. 3.4.9 > 3.5.17 > 5.0.3 > 5.4.1, the calendar plugin is working fine. Does it mean 5.4.1 now support calendar plugin and we do not require Team Calendar?