0.5.0 (2019-10-26)

1. New Feature: Java 9, 10, 11, 12 support. But Java 6 and Java 7 are deprecated now.
2. New Feature: Log handler
3. New Feature: HTTP V2 support (thanks to Nginx v1.14.2)
4. Bug Fix: Memory leak with file handler #180
5. Bug Fix: Zero buffer error when hijack_send empty string #181
6. Bug Fix: Mysql driver issue about jdbc4 flag
7. Bug Fix: ContainsKey of nginx shared map
8. Bug Fix: NginxRequest.setVariable in a rewrite handler will hang
9. Bug Fix: Segmentation fault on shutdown
10. Bug Fix: Make clojure request map immutable for compojure
11. Enhancement: API for discarding request body (request.discardRequestBody())
12. Enhancement: Coroutine support for cascade constructor invoking
13. Enhancement: Configurable headers/variables prefetch for more safety in multithreaded mode
14. Binaries Distribution: built with Nginx v1.14.2