add work stealing in vertex computation

Link: https://github.com/GeneAssembly/biosal/issues/567
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
rename add_route to add_action

Link: https://github.com/GeneAssembly/biosal/issues/604
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
add prefix SCRIPT_ for every script

Link: https://github.com/GeneAssembly/biosal/issues/602
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
rename use_route to take_action

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
use prefix ACTION_ for every tag

Link: https://github.com/GeneAssembly/biosal/issues/603
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>