v4.0.0 - 4 Fast 4 Furious

9 feature

• Add support for disabling TLSv1.0 (#1562)
• Request body read time metric (#1569)
• Add out_of_band hook (#1648)
• Re-implement (native) IOBuffer for JRuby (#1691)
• Min worker timeout (#1716)
• Add option to suppress SignalException on SIGTERM (#1690)
• Allow mutual TLS CA to be set using ssl_bind DSL (#1689)
• Reactor now uses nio4r instead of select (#1728)

9 bugfixes

• Do not accept new requests on shutdown (#1685, #1808)
• Fix 3 corner cases when request body is chunked (#1508)
• Change pid existence check's condition branches (#1650)
• Don't call .stop on a server that doesn't exist (#1655)
• Implemented NID_X9_62_prime256v1 (P-256) curve over P-521 (#1671)
• Fix @notify.close can't modify frozen IOError (RuntimeError) (#1583)
• Fix Java 8 support (#1773)
• Fix error uninitialized constant Puma::Cluster (#1731)
• Fix not_token being able to be set to true (#1803)