An invalid multibyte character sequence appears in the source code

Link: https://github.com/GeneAssembly/biosal/issues/553
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
use an event counter instead of a loop

Link: https://github.com/GeneAssembly/biosal/issues/558
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>
use event counter for arc classifier

Link: https://github.com/GeneAssembly/biosal/issues/558
Signed-off-by: Sébastien Boisvert <boisvert@anl.gov>