First attempt on implementation of counting semaphores
Making rubocop happy (sort of)
JRuby - fix
JRuby fix #2
JRuby fix #3
JRuby fix #4
JRuby fix #5
JRuby fix #6 - makes .acquire return nil
Removed one check from reduce_permits
Merge pull request #206 from adamruzicka/counting-semaphores

Adds counting semaphores