Implemented a few storage methods introduced in Django 1.3 but missin…

…g in older versions of Django. Closes disqusGH-11.

compressor/storage.py

@@ -1,4 +1,6 @@
 import gzip
+from os import path
+from datetime import datetime
 
 from django.core.files.storage import FileSystemStorage, get_storage_class
 from django.utils.functional import LazyObject
@@ -21,6 +23,15 @@ def __init__(self, location=None, base_url=None, *args, **kwargs):
         super(CompressorFileStorage, self).__init__(location, base_url,
                                                     *args, **kwargs)
 
+    def accessed_time(self, name):
+        return datetime.fromtimestamp(path.getatime(self.path(name)))
+
+    def created_time(self, name):
+        return datetime.fromtimestamp(path.getctime(self.path(name)))
+
+    def modified_time(self, name):
+        return datetime.fromtimestamp(path.getmtime(self.path(name)))
+
     def get_available_name(self, name):
         """
         Deletes the given file if it exists.