* Version 3.0.0

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci



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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Dulwich 0.20.0 dropped support for Python 2 and 3.4.

* Fix import of ProxyFix for werkzeug 1.0.x

Fix import of ProxyFix for werkzeug 1.0.x

* Require Werkzeug>=0.15.0 for werkzeug.middleware.proxy_fix

Require Werkzeug>=0.15.0 for werkzeug.middleware.proxy_fix

Fixes #204

pygments also no longer supports 2.6.

This should fix the build on travis.

Smart HTTP doesn't work yet (depends on jelmer/dulwich#295)