Patch title: Release 90 bulk changes
Abstract:
File: /appli/calendar/database.pli
Key:
    Removed line
    Added line
submodule "/pliant/appli/database.pli"
submodule "/pliant/appli/database/split.pli"

public

type CalendarEvent
  field DateTime from to
  field Str label
  field Str memo
  field Str privacy

type CalendarUser
  field Set:CalendarEvent event
  split_field Set:CalendarEvent history

type CalendarDatabase
  field Set:CalendarUser user

(gvar Database:CalendarDatabase calendar_database) load "security:/calendar2.pdb" mount "/pliant2/calendar"