vector: reserve space before unpacking

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
examples: rename actor in the hello example

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
verify if actor is dead before doing work

Also: stop stream when closing it.

Link: https://github.com/GeneAssembly/biosal/issues/150
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
change counter to event counter

Link: https://github.com/GeneAssembly/biosal/issues/128
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
count entries in files in parallel with actors

Link: https://github.com/GeneAssembly/biosal/issues/108
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
add a function to get the node name of an actor

Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>