Log Message:
3.0.1:

Bugfixes
- CONTINUATION frames sent on closed streams previously caused stream errors
  of type STREAM_CLOSED. RFC 7540 § 6.10 requires that these be connection
  errors of type PROTOCOL_ERROR, and so this release changes to match that
  behaviour.
- Remote peers incrementing their inbound connection window beyond the maximum
  allowed value now cause stream-level errors, rather than connection-level
  errors, allowing connections to stay up longer.
- h2 now rejects receiving and sending request header blocks that are missing
  any of the mandatory pseudo-header fields (:path, :scheme, and :method).
- h2 now rejects receiving and sending request header blocks that have an empty
  :path pseudo-header value.
- h2 now rejects receiving and sending request header blocks that contain
  response-only pseudo-headers, and vice versa.
- h2 now correct respects user-initiated changes to the HEADER_TABLE_SIZE
  local setting, and ensures that if users shrink or increase the header
  table size it is policed appropriately.