update changelog

Author: Gal Rogozinski

changelog.txt

@@ -1,6 +1,23 @@
 1.8.0
 
 - Feature: new networking infrastructure, new network rules, and batched BCT curl (#1393)
+  * UDP support is dropped
+  * Performs handshake upon peering
+  * Protocol version support
+  * Not compatible with older versions of IRI
+  * The following configuration options are dropped:
+    UDP_RECEIVER_PORT
+    TCP_RECEIVER_PORT
+    MAX_PEERS
+    DNS_REFRESHER_ENABLED
+    DNS_RESOLUTION_ENABLED
+  * The following configuration options are added:
+    NEIGHBORING_SOCKET_ADDRESS— defines the socket address to bind the TCP socket to.
+    NEIGHBORING_SOCKET_PORT— defines the port of the TCP socket to use.
+    RECONNECT_ATTEMPT_INTERVAL_SECONDS— defines the interval at which to try to reconnect/disconnect wanted neighbors.
+    AUTO_TETHERING_ENABLED — controls auto-tethering, this was previously controlled via TESTNET true, default is false (also in testnet mode).
+    MAX_NEIGHBORS— rename of MAX_PEERS, defines the max number of connected neighbors.
+
 - Fix: set arrival time in millis (not seconds) (#766)