Update ChangeLog

Author: jedisct1

ChangeLog

@@ -1,3 +1,22 @@
+# Version 2.1.15 [not released yet]
+ - The proxy now dynamically reduces timeouts as the connection limit is
+approached, improving performance and preventing connection exhaustion under
+heavy load.
+ - Fixed crashes in the configuration file watcher when fsnotify creation
+fails.
+ - DHCP resolver errors ($DHCP forwarding) are now properly logged and
+visible to system administrators.
+ - Fixed double-bracketing of IPv6 addresses in DoH stamps that could prevent
+proper connection to IPv6 DoH servers.
+ - Cache statistics are now more accurate by only counting queries that
+actually participate in caching.
+ - The monitoring UI has been enhanced with server health indicators and
+improved display of resolver performance metrics.
+ - Proxy hostnames (when using SOCKS/HTTP proxies) are now pre-resolved using
+bootstrap resolvers if they are domain names.
+ - Multiple IP addresses per hostname are now cached instead of randomly
+selecting one, improving connection reliability for multi-homed servers.
+
 # Version 2.1.14
  - Added support for client IP address encryption in logs using IPCrypt
 (https://ipcrypt-std.github.io/). Three algorithms are supported: