add: added addrolereward and removerolereward events for .notify

add: added .notify with no params showing events with descriptions
add: .winlb
docs: updated docs
dev: updated discord.net, redid migrations

src/NadekoBot/Migrations/Sqlite/NadekoSqliteContextModelSnapshot.cs

@@ -2590,6 +2590,8 @@ namespace NadekoBot.Migrations
 
                     b.HasKey("Id");
 
+                    b.HasIndex("MaxWin");
+
                     b.HasIndex("UserId", "Game")
                         .IsUnique();