Keyring

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* 335: Fix regression in command line client.

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* Keyring command-line interface now reads the password
directly from stdin if stdin is connected to a pipe.

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* 329: Improve output of ``keyring --list-backends``.

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* 327: In kwallet backend, if the collection or item is
locked, a ``KeyringLocked`` exception is raised. Clients
expecting a None response from ``get_password`` under
this condition will need to catch this exception.
Additionally, an ``InitError`` is now raised if the
connection cannot be established to the DBus.

* 298: In kwallet backend, when checking an existing
handle, verify that it is still valid or create a new
connection.

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* Fixed issue in SecretService. Ref 226.

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* 322: Fix AttributeError when ``escape.__builtins__``
is a dict.

* Deprecated ``keyring.util.escape`` module. If you use
this module or encounter the warning (on the latest
release of your packages), please `file a ticket
<https://github.com/jaraco/keyring/issues/new>`_.