Added date tag to feed on every visit, to help with issue #28
Converted "updated" field on feeds to datetime when present, partially resolving issue #29
Added better date handling on the store_feeds function on feedfinder.py
improved parsedates function
added sorting feeds by date in downloader as requested on issue #28
fixed bug and improved usage
fixed bug and improved usage
pep 8
converted prints to new-style formatting;
Started using tempdir for httrack output; fixes issue #23
Merge pull request #33 from NAMD/fix_extract_feeds_lock

Fix extract feeds lock

merging after fixing all the issue raised.