Fix VTIMEZONE DTSTART format and TZOFFSETFROM calculation#58

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icvalyssa wants to merge 2 commits intojasvrcek:masterfrom

icvalyssa:master

Commits on Oct 9, 2020

Fix VTIMEZONE DTSTART format -- remove TZID and use local time
icvalyssa
committed
Fix VTIMEZONE TZOFFSETFROM -- look back > 1hr to get previous offset
icvalyssa
committed