Update TODO

README.md

@@ -67,8 +67,6 @@ Just invoke `./release.sh` and follow instructions.
 - Make the Linux binary smaller
 - Bound how-much-to-highlight restriction by number of characters highlighted
   rather than by number of tokens highlighted
-- Search code for `.clone()` and `.to_string()` and see if we can get rid of
-  some of them
 - `--help`: Only print installing-into-`$PATH` help if we aren't already being
   executed from inside of the `$PATH`
 - Do `git show 5e0a1b2b13528f40299e78e3bfa590d9f96637af` and scroll to the end.
@@ -169,3 +167,4 @@ Just invoke `./release.sh` and follow instructions.
   reverse red.
 - Highlight whitespace in added parts only
 - Add highlighting of non-leading tabs to the whitespace analysis
+- Profile and see if we can go faster