This is the version of hgflow that works with modern mercurial versions. It's been a pain to find the right version compatible with mercurial v4.5.3 so I've just mirrored it here.
Super concise installation guide (refer to the original docs for details):
mkdir ~/.hgext && curl https://raw.githubusercontent.com/ffeast/hgflow/master/hgflow.py > ~/.hgext/hgflow.py
- add the following line into your
~/.hgrc
under the[extensions]
section hgflow = ~/.hgext/hgflow.py