Llfuse

==========================

* Dropped pytest-catchlog dependency and add support for Pytest 3.3.0.
* Minor bugfixes.

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* Minor bugfixes.

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* The main loop now terminates properly again when terminated
by a signal.

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* The `StatvfsData` class now has an `!~StatvfsData.f_namemax`
attribute.

* `EntryAttributes` and `StatvfsData` instances can now be pickled and
copied. Other llfuse classes now raise an exception when the do not
support pickling/copying.

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* The *attr* argument of the `~Operations.setattr` handler now
contains valid values only for the attributes that are to be set.

Previously, the documentation assorted that other attributes would
be set to the original (unchanged) values. However, that was
actually never the case.

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* Fixed the description of the `~Operations.lookup` handler (should
return zero if there is no such entry, not a negative value).
* Fixed the description of the `EntryAttributes` structure
(descriptions of `~EntryAttributes.attr_timeout` and
`~EntryAttributes.entry_timeout` were switched).