needforspeed: new replace implementation by Andrew Dalke.  replace is now about 3x faster on my machine, for the replace tests from string- bench.
needforspeed: new replace implementation by Andrew Dalke.  replace is
now about 3x faster on my machine, for the replace tests from string-
bench.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator