Remove problematic colons. Regular colon screening is part of a healthy lifestyle.

Author: mbax

src/main/java/org/kitteh/irc/client/library/implementation/IRCClient.java

@@ -251,7 +251,7 @@ public void addChannel(@Nonnull String... channels) {
         }
         for (String channelName : channels) {
             this.channelsIntended.add(channelName);
-            this.sendRawLine("JOIN :" + channelName);
+            this.sendRawLine("JOIN " + channelName);
         }
     }
 
@@ -261,7 +261,7 @@ public void addKeyProtectedChannel(@Nonnull String channel, @Nonnull String key)
         Sanity.nullCheck(key, "Key cannot be null");
         Sanity.truthiness(this.serverInfo.isValidChannel(channel), "Invalid channel name " + channel);
         this.channelsIntended.add(channel);
-        this.sendRawLine("JOIN :" + channel + ' ' + key);
+        this.sendRawLine("JOIN " + channel + ' ' + key);
     }
 
     @Override
@@ -275,7 +275,7 @@ public void addKeyProtectedChannel(@Nonnull Pair<String, String>... channelsAndK
         }
         for (Pair<String, String> channelAndKey : channelsAndKeys) {
             this.channelsIntended.add(channelAndKey.getLeft());
-            this.sendRawLine("JOIN :" + channelAndKey.getLeft() + (channelAndKey.getRight() == null ? "" : (' ' + channelAndKey.getRight())));
+            this.sendRawLine("JOIN " + channelAndKey.getLeft() + (channelAndKey.getRight() == null ? "" : (' ' + channelAndKey.getRight())));
         }
     }