minor modification
Moving #PTR alias #ϝ method from YPetri
Exposing #finalize method in the DSL.
debugging
debugging
Added custom modification of YNelson::Agent#new_simulation method over YPetri::Agent#new_simulation.
Making finalize method not to count block as done if it raised and was not rescued
update corresponding to y_petri refactor and version bump
user manual updates