Keep timezone in calendar event if available

[MarcelRobitaille]

Fix #256

See also MarcelRobitaille#38

[lukasdotcom]

Hi @MarcelRobitaille

Thanks so much for the pr. You do still need to fix the failing psalm errors by editing the type definition on line 197 (You can see the exact error by running composer psalm), but other than that it did work wonderfully when I tested it myself.

[MarcelRobitaille]

Hi @lukasdotcom Thanks for checking it. I'm working on making recurring event exceptions actually work properly. Should I include that in this PR, or finish it and open a new one?

[lukasdotcom]

Hi @lukasdotcom Thanks for checking it. I'm working on making recurring event exceptions actually work properly. Should I include that in this PR, or finish it and open a new one?

You can open a new one for that. This pr can be merged, thanks. 🚀

[Moudilu]

Thanks for fixing this @MarcelRobitaille !

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