Fastimport

* Fix version number. (Jelmer Vernooij)

* Don't attempt to encode bytestrings in utf8_bytes_helper().
(Jelmer Vernooij, 1647101)

* Add fast-import-filter, fast-import-query and fast-import-info
script. (Jelmer Vernooij)

* Add python3.4 support (Jelmer Vernooij)

* Add python3.5 support. (Félix Mattrat)

* Get handlers from class object using getattr() for possible inheritance
(Cécile Tonglet)

* Fix 'check-pypy' by removing use of nonexistant target. (masklinn)

* Use namedtuple for authorship tuple in Commit.{author,committer}.
(masklinn)

* Remove unused and untested helper single_plural,
invert_dict, invert_dictset, defines_to_dict and
binary_stream.
(Jelmer Vernooij)

* Install NEWS and README files.