Update TODO

doc/TODO

@@ -20,6 +20,7 @@ Before 0.1
 - Implement some optional stuff from http://greenbytes.de/tech/tc2231/
   (especially filename with Content-Disposition: inline)
 - Icon
+- Use profiler to check what uses most CPU -> probably add config cache
 
 New big features
 ================
@@ -103,6 +104,7 @@ Improvements / minor features
 - :%! like feature to pipe current page through a filter.
 - Add FIFOHandler based on asyncio if it's available
 - Lazy tab loading
+- Add command shortcuts to command completion
 
 hints
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