Excel2ical v2.2

-tidied up the code a bit
-Gui workover
-added an exception when creating the ics

Excel2ical v2.1

Bug fixed:
skips empty rows in Excel

Excel2ical v2.0

• Complete GUI workover
• Additional security checks
• Intuitive user guidance
• one file software without installation

Excel2ical v1.2

Updated version, icon added, no cli in the background
built with Qt Gui and safety checks

Now all in one file!