xmrig-v2.15.4-beta更新日志：
Notes
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v2.15.0-beta
#314 Added donate over proxy feature.
Added new option donate-over-proxy.
Added real graceful exit.
v2.15.1-beta
#1007 Old HTTP API backend based on libmicrohttpd, replaced to custom HTTP server (libuv + http_parser).
#257 New logging subsystem, file and syslog now always without colors.
v2.15.2-beta
#1010 Added daemon support (solo mining).
#1012 Fixed compatibility with clang 9.
Config subsystem was rewritten, internally JSON is primary format now.
Fixed regression, big HTTP responses was truncated.
v2.15.3-beta
#1014 Fixed regression, default value for algo option was not applied.
v2.15.4-beta
Added global uptime and extended connection information in API.
API now return current algorithm instead of global algorithm specified in config.
This version also include all changes from stable version v2.14.4.