v2.11

This release enables the definition of a multiband amplifier site composed of multiple amplifiers, each for a separated band (a typical application is C+L transmission).

The release also includes autodesign for links (Optical Multiplex Section, OMS) composed of multi_band amplifiers. Multi_band autodesign includes basic tilt and tilt_target calculation when the Raman flag is enabled with the --sim-params option.

The spectrum is demultiplexed before propagation in the amplifier and multiplexed at the amplifier output before the propagation in the output fiber.

A preturbative Raman solution and an approximated GGN model are introduced for a faster evaluation of the Raman and Kerr effects, respectively. These implementations are intended to reduce the computational effort required for multiband transmission simulations.