formatting: Remove segment parts, you can use template tags instead. Segment parts were used to switch formatters insides a given content segment, but that's also achievable with template tags like `pcformat` in Jinja to some degree. It's not totally the same but removing it simplifies the code and improves performance.

*.pyc
*.egg-info
.cache
__pycache__
venv
tags
bower_components
node_modules
build/lib
util/messages/_cache
util/messages/_counter
dist
docs/_cache
docs/_counter
foodtruck/static
piecrust.egg-info
piecrust/__version__.py
.ropeproject