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This PR brings the latest time zone db which produces a much smaller output at the cost of readability.
A sample demo using a single timezone produces a fast/full optimized js of size:
before this PR
fast/full
10501722/1517932
after this PR
fast/full
2837605/981000
Note that the size without tz usage is:
fast/full
1672688/372915
I don't expect this code to be the final way to provide a tzdb, instead a system where you can build your own db would produce smaller files and simpler to maintain
However this is already usable and could be released