perf: adds a cache to know if obsmarkers might affect a revision
Phase information still needs to be thrown in the mix to compute the final
information, but skipping reading the obsstore for most operation is a large
win.
Usage of this cache arrives in the next changeset.
all: tutorials/tutorial.rst static/logo-evolve.ico
sphinx-build . ../html/
tutorials/tutorial.rst: tutorials/tutorial.t
python test2rst.py tutorials/
static/logo-evolve.ico: static/logo-evolve.svg
convert -resize 36x36 static/logo-evolve.svg static/logo-evolve.ico