* THANKS TO Anders Jensen-Urstad, GabSeb, and phst.

 * THANKS TO Evgrafov Denis, Eugene, foo, Sergey Briskin, Valid Olov,
   and Vitaliy Grishenko.

 * THANKS TO Isabel Ferreira, and Rodrigo Emmanuel Santana Borges.

 * THANKS TO André Monteiro, kagazz, Manuela Silva, Andrew_Melim, and
   Sérgio Marques.

 * THANKS TO Aron, Dawid, Krzysztof Łojowski, and seb.

 * THANKS TO Allan Nordhøy, Harald, and thor574.

 * THANKS TO shahril.

 * THANKS TO Ojārs Balcers.

 * THANKS TO Seng Sutha, Sokhem Khoem, and Sok Sophea.

 * THANKS TO Blackywantscookies, and Cerbo.

 * THANKS TO Ana B.

 * THANKS TO Elifelet.

 * THANKS TO yahoe.001

 * THANKS TO fayçal fatihi, Frisson Reynald, hpatte, Lunar, Onizuka,
   themen, Towinet, and Yannick Heintz.

 * THANKS TO viljaminojonen, and Finland355.

 * THANKS TO Mohammad Hossein.

 * THANKS TO Pablo Lezaeta.

 * THANKS TO Paola Falcon.

 * THANKS TO richardshaylor.

 * THANKS TO Adrian Pappas, andromeas, isv31, and Wasilis Mandratzis.

 * THANKS TO Tobias Bannert.

 * THANKS TO autofunk78.

 * THANKS TO Ahmad Gharbeia, Mohamed El-Feky, AnonymousLady, 0xidz,
   Sherief Alaa , and محيي الدين.

This makes the calls to log incoming emails (if debugging is enabled)
less strict about unicode encoding, and also catches
UnicodeDecodeErrors (in addition to UnicodeErrors).

The travis-ci bot cannot currently use #tor-bots due to the +m mode.

 * ADD a branch to `bridgedb.email.autoresponder.SMTPAutoresponder.runChecks()`
   which calculates the Levenshtein Distance of an incoming email address in
   order to fuzzy match it against those in the EMAIL_BLACKLIST setting.

 * FIXES #9385:
   https://trac.torproject.org/projects/tor/ticket/9385

 * ADD the EMAIL_BLACKLIST setting, which is a list of blacklisted
   (spammer/harvester) email addresses.

 * ADD the EMAIL_FUZZY_MATCH setting, which allows for fuzzy matching of the
   EMAIL_BLACKLIST addresses via the Levenshtein Distance algorithm.

 * ADD new function, `bridgedb.util.levenshteinDistance()`.

Matthew Finkel authored Jul 19, 2014 and Isis Lovecruft committed Jul 22, 2014

Signed-off-by: Isis Lovecruft <isis@torproject.org>

For now, we need to revert this check to get the email distributor to
function. We should look into this issue in order to get BridgeDB in a
state where instances of it are runnable by other organisations to hand
out their own bridges. [OTHER_ORG]

Fixing this is essential for #12086.