SwiftNIO HTTP/2 1.2.1

Semver Patch

• Fixed an issue where stream channels would not be closed if the underlying transport vanished. (#131)
• Fixed an issue where flushed frames could very rarely get "stuck" and not emitted until the next flush. (#125)
• Fixed an issue where flow controlled inbound frames could have their flow control state counted more than once. (#114)
• Improved performance by removing indirection between stream channels and the stream multiplexer. (#126)
• Fixed up system for notifying stream channels that they've become active, avoiding issues when setting up such channels. (#124)
• Correctly notify the outbound frame buffer of changes to the remote peer's value of SETTINGS_MAX_CONCURRENT_STREAMS. (#113)
• Allow closing idle stream channels that have never been used. (#123)
• Improved performance by removing unnecessary future callbacks in stream channel setup. (#116)
• Reduced heap allocations when creating stream channels. (#115)
• Reduced heap allocations when decoding HPACK header blocks. (#118)
• Reduced copying when transforming between HTTP/1 and HTTP/2 header blocks. (#112)
• Removed an inadvertent copy-on-write when buffering inbound frame bytes. (#111)
• Boxed some cases of HTTP2Frame.FramePayload to avoid the costs of copying the data about. (#110)
• Improved test setup. (#129, #130)
• Added allocation tests. (#122)
• Added performance tests. (#117)
• Turned on warnings as errors in CI. (#127)