Outlook generated timezone can´t be parsed

[benjamin79]

DTSTART;TZID=W. Europe Standard Time:20181227T130000 or
DTSTART;TZID="W. Europe Standard Time":20181227T130000

leads to

 start: {:error, {:invalid_timezone, "W. Europe Standard Time"}},

Reason seems to be the missing lookup:
https://github.com/bitwalker/timex/blob/master/priv/standard_to_olson.exs

I´m not sure where and how to do it, but there needs be something like this:
Timex.Timezone.Utils.to_olson("W. Europe Standard ") which replaces it with "Europe/Berlin"