Klaus

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* Fix .tar.gz download if repository contains git submodule. (Jonas Haag)

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* 87, 98: Add favicon (lb1a)
* 35, 95: Add default robots.txt file (lb1a)
* 93, 94, 101: Add "download as .tar.gz archive" feature. (Mechazawa, Jonas Haag)
* Bug 90: htdigest file handling broken in contrib.wsgi. (Philip Dexter)
* Bug 99/53: Misbehaving mimetype recognition (Mechazawa)

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* 89: Work around a bug in Dulwich 0.9.5: https://github.com/jelmer/dulwich/issues/144
(Klaus Alexander Seistrup, Jonas Haag)

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* Bugfix release for bugfix release 0.4.4. (Daniel Krüger, Jonas Haag)

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* Fix syntax highlighting in case multiple different file formats share the
same file extension. Rely on Pygments to select the best matching lexer for us.
(Gnewbee, Jonas Haag)

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* Bug 86: Empty repo name if klaus is fed a ".git" directory.
Now: name of parent directory, i.e. /foo/bar/.git has the name "bar".
(David Wahlund)