Updated README

README.md

@@ -16,7 +16,7 @@ Discord.Net is also in early development so several functions may be unstable or
 
 # Upcoming
 - Modifying User/Channel/Server Settings
-- Sending Private Messages
+- Sending Private Messages (Replies are supported, starting a new private chat currently is not)
 
 # Example (Echo Client)
 ```
@@ -29,6 +29,7 @@ await client.Connect("discordtest@email.com", "Password123");
 await client.AcceptInvite("channel-invite-code");
 ```
 
-# Remarks
+# Known Issues
 
 Due to current Discord restrictions, private messages are blocked unless both the sender and recipient are members of the same server.
+Caches do not currently clean up when their entries are no longer referenced, and there is no cap to the message cache. For now, connecting and disconnecting will clear all caches.