amend: in tests, do not rely on defaults -- always use explicit -d
Having a default -d option will make it hard to test
-D/--current-date, which is coming shortly: presence of -d overrides
-D, just like with mq's qrefresh.
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