Update TODO.

TODO

@@ -1,7 +1,10 @@
+* The internals of Predis\MultiExecContext should be refactored since the code
+  has become a bit too convoluted.
+
 * Add more granular tests in the client features test suite.
 
-* Documentation! The README is obviously not enought to show how to use 
-  Predis as it does not cover all of its features.
+* Documentation! The README is obviously not enought to show how to use Predis
+  as it does not cover all of its features.
 
-* Missing tests for commands: 
+* Missing tests for commands:
     PUBLISH, SUBSCRIBE, UNSUBSCRIBE, PSUBSCRIBE, PUNSUBSCRIBE