matplotlib/matplotlib — pull request #2279 by jenshnielsen (2013-08-04 18:51:18+00:00)
Title: Pyparsing

Bump minimum pyparsing version to 2.0.1. By doing this we can replace the deprecated << with <<= and simplify the version logic for pyparsing. In addition a no longer relevant work around for pyparsing <2.0.0 on python 3 has been removed. This fixes #2240