- Layout fixes for newer devices and iOS 17

- iOS 14 compatibility

● iOS 11 compatibility & support for iPhone X

Performance improvements when loading large amounts of data.

▶ Bugfix: App sometimes crashed when switching calendars in settings

▶ iPhone 6 (plus) ready: Optimized for 4.7'' and 5.5'' screen
▶ iOS 8 ready

▶ iOS 7 ready
▶ More statistics
 - # of all day events
 - # of events with 0 min. duration
 - # of events with 1 attendee

▶ More statistics:
 - Total number of meetings
 - Total hours spent in meetings
 - Average and max. number of attendees
 - Average and max. duration
▶ Option to ignore events with 0 min. duration
▶ Beautify charts

✔ Polished charts
✔ iPhone 5 ready: Support for 4 screen
✔ Ready for iOS 6
✔ Minor bugfixes

✓ Minor bugfixes

☞ iPad support
☞ iOS 5 ready
☞ minor bugfixes

☞ Save charts to gallery
☞ Send charts by e-mail
☞ Open charts in other iPhone apps (e.g. dropbox)