Merge Lindsey's recent advances with my master

Merge Lindsey's recent advances with my master

Conflicts:
	.gitignore    (use my master, dumping Lindsey's changes)
	readme.html   (remove in favor of my README)
	rss2email.py  (use my master, bringing in the following changes from
	               Lindsey's branch)

  commit 42fa878f929c6ee39c8068d186de1ae7f4630638
  Author: Lindsey Smith <lindsey.smith@gmail.com>
  Date:   Mon Mar 14 09:18:42 2011 -0700

    Improved basic email validation

Incorperated into Feed._validate_email.

  commit 38b33a71e049f29743ce1805b82d4f048e466ce6
  Author: Lindsey Smith <lindsey.smith@gmail.com>
  Date:   Mon Mar 14 09:19:12 2011 -0700

    Initial revision

Incorperated into the Feed._validate_email doctest.

  commit a55809611f9706e7004791c060bd7e5a90a2dcb9
  Author: U-SEVEN\lindsey <lindsey.smith@gmail.com>
  Date:   Fri Jun 24 11:07:22 2011 -0700

    Better attribute handling. Factored out tag handling into getTags()

This wasn't an atomic commit.  I dropped the BeautifulSoup HTML
cleanup to avoid an additional dependency.  I skipped the r → fullfeed
change in getName because I'd already rewritten that function as
Feed._get_entry_name.  I tweaked Feed._get_entry_tags to also handle
termless-tags.

  commit db2ac2f7a76cf93022363ac103f17d7ec71927f9
  Author: U-SEVEN\lindsey <lindsey.smith@gmail.com>
  Date:   Fri Jun 24 11:08:19 2011 -0700

    Added tests for getTags()

Merged getName tests into the Feed._get_entry_name doctest and merged
tag tests into the Feed._get_entry_tags doctest.

The other commits in Lindsey's branch didn't have anything that is
still useful after my refactoring.