A [fullcalendar] shortcode with custom parameters to be inserted in your pages/posts
An admin page where you can define a custom HEAD and BODY template for the [fullcalendar] shortcode
By default FullCalendar 3.4.0 JS+CSS is loaded locally, your can change the version and/or load from cdnjs by setting the HEAD template (WARNING : Setting the HEAD template will remove the default FullCalendar JS+CSS loading)
A default BODY template to display a Google Calendar (just fill in your API KEY and your Google Calendar ID)