Appendix A. Migrating from Cowboy 2.18 to 2.19
Cowboy 2.19 is a maintenance release containing a
small number of fixes and improvements.
Cowboy 2.19 requires Erlang/OTP 27.0 or greater.
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Support for Erlang/OTP versions below 27.0 was dropped.
Cowboy will now only support Erlang/OTP versions that
receive security patches.
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Cowboy processes now have labels.
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Update Cowlib to 2.20.0.
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HPACK: only index fields known to be safe; never
index other fields. This may result in larger
HTTP/2 messages.
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HPACK: fix name-only indexing.
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Parsing of numbers in protocol components was
made stricter. The limit in the number of digits
was increased from 17 to 20 to accomodate
peculiar implementations.