Arcus Server 1.13.5

🐣 New Features

• Add ready command Add ready command to verify that the cache server can receive requests.
  In Zookeeper clustering, the cache node becomes ready state after creating its cache_list znode. #707

🔧 Enhancements

• Fix compile warnings on RHEL8 and Ubuntu.
• Add Dockerfile.
• Changed the MAX_ZK_TO value from 300 to 2000 secs.
• Use <latest-release>-unknown version when git describe fails.
• Add zk_version to stats zookeeper response.
• Summarize rejected connection log message occured frequently.
• Modify mismatches between log level and verbose.
• Check dependencies in the prefix path before the default path. #699
• Compare core version and engine version when create_instance().

🐛 Bug Fixes

• Set arcus_conf.zk_timeout to the negotiated timeout with ZK server.
• Terminate the process if any address already in use. #665
• Convert string of exptime to int64_t in ASCII protocol. #711
• Fix bop mget/smget parsing logics. #722 #724 #725
• Do not use out_string() in binary protocol.
• Fix a memory leak possible in UDP and binary protocol.

📝 Documentation

• Fix typo and remove whitespace.
• Edit maxbkeyrange document.
• Add texts for dependencies installation.
• Restructure markdown documentation directory.

✅ Testing

• Use Github Actions instead of Travis for CI test.
• Make possible to test t/issue_67.t even in root user.
• Exclude all Makefiles from whitespace test.

⬆️ Dependency Upgrades

• Modify to have dependency libraries(libevent and zookeeper-client-c) and add dependency libraries install script.