add 2.3.0 release

Signed-off-by: Sébastien Boisvert <sebastien.boisvert.3@ulaval.ca>
SpuriousSeedAnnihilator: fix some compilation warnings

Signed-off-by: Sébastien Boisvert <sebastien.boisvert.3@ulaval.ca>
This is Ray version 2.3.0

Signed-off-by: Sébastien Boisvert <sebastien.boisvert.3@ulaval.ca>