pydata/pandas — pull request #4706 by rockg (2013-08-29 12:40:13+00:00)
Title: ENH: Ability to tz localize when index is implicility in tz

Fix to issue #4230 which allows to localize an index which is
implicitly in a tz (e.g., reading from a file) by passing imply_dst to
tz_localize.