evolvecmd: _possibledestination() skip visiting empty parent
I see that even in the case when "parent == -1" we are visiting
that also and find succsets for that and in last -1 is being
added in the set of possible destination. Why not skip that?
#!/bin/bash
set -eox pipefail
function compile {
pandoc \
-s $1 \
-o $2 \
--toc --toc-depth=4 \
-F pandocfilters/examples/graphviz.py -F mypandocfilters/graphviz-file.py -F mypandocfilters/raw-file.py \
-t html5 \
--template standalone.html --variable=template_css:uikit.css
}
compile slides.md index.html