First release.
Added
- Two APIs for the simulation of chemical reaction networks:
- `gillespie::Gillespie` which allows one to define a system at run
time, and with several possible rate functions (Law of Mass Action
but also Hill functions or Michaelis--Menten dynamics);
- `define_system!` which requires that the system is defined at
compilation. It only supports rate functions based on the Law
of Mass Action. It runs typically three times as fast as the
programmatic API.