Update the LICENSES document

LICENSES

@@ -4,19 +4,12 @@ Licenses
 The whole ``aioxmpp`` is distributed under the GPLv3. See ``COPYING.gpl3`` for
 the full license text.
 
-An exception is made for the ``aioxmpp/ssl_transport.py``, which is
-substantially based on the ``_SelectorSslTransport`` class found in the
-[asyncio package][1] (at the time of writing, in ``selector_events.py``). The
-[asyncio][1] package is distributed under the Apache 2.0 license (see
-``COPYING.apache20``), and permission is granted to use
-``aioxmpp/ssl_transport.py`` under the very same license.
-
 Dependencies
 ------------
 
 The licenses of the dependencies shall be listed here, too:
 
-* ``pyOpenSSL`` uses Apache 2.0 (see ``COPYING.apache20``)
+* ``pyOpenSSL`` uses Apache 2.0 (see ``docs/licenses/apache20.txt``)
 
 * ``pyasn1`` and ``pyasn1_modules`` use 2-clause BSD (see
   ``docs/licenses/pyasn1.txt``)
@@ -30,4 +23,8 @@ The licenses of the dependencies shall be listed here, too:
 
 * ``libxml2`` uses the Expat MIT license (see ``docs/licenses/libxml2.txt``)
 
-   [1]: https://pypi.python.org/pypi/asyncio/3.4.3
+* ``multidict`` uses the Apache 2.0 license (see ``docs/licenses/apache20.txt``)
+
+* ``aiosasl`` uses the GPLv3 license (see ``COPYING.gpl3``)
+
+* ``aioopenssl`` uses the Apache 2.0 license (see ``docs/licenses/apache20.txt``)