When rescaling, also rescale extremums.

Otherwise getNextPeriod will fail if earliest_date is in a different
format.
And one more minor release !

apachedex/__init__.py

@@ -1365,6 +1365,8 @@ def main():
           old_date_format = date_format
           asDate, decimator, graph_period, date_format, placeholder_delta, \
             round_date, graph_coefficient = period_parser[period]
+          latest_date = rescale(latest_date)
+          earliest_date = rescale(earliest_date)
           period_increase_start = time.time()
           for site_data in per_site.itervalues():
             site_data.rescale(rescale, getDuration)

setup.py

@@ -51,7 +51,7 @@ description = open('README').read()
 
 setup(
   name='APacheDEX',
-  version='1.3.1',
+  version='1.3.2',
   description=(x for x in description.splitlines() if x.strip()).next(),
   long_description=".. contents::\n\n" + description,
   author='Vincent Pelletier',