more generous Java memory, also hoping to prevent spurious java.lang.StackOverflowError in isabelle_cronjob;
#!/usr/bin/env bash
#
# DESCRIPTION: build history versions from another repository clone
THIS="$(cd "$(dirname "$0")"; pwd)"
"$THIS/build" jars > /dev/null || exit $?
exec "$THIS/../bin/isabelle_java" isabelle.Build_History "$@"