The package becomes more meta to reach higher performance.
This commit groups the change operated to the creation of models and simulate function of a ContinuousTimeModel. The general idea is to create a concrete type and a simulate function per model creation by metaprogramming. - Now, ContinuousTimeModel is an abstract type. Each creation of a model defines a concrete type T <: ContinuousTimeModel by meta programming. - f! and isabsorbing ContinuousTimeModel fields are Symbols. - simulate(::ContinuousTimeModel) is run by multiple dispatch, according to the type of the model. Can't run the whole tests for now but unit/simulate_available_models.jl runs properly (i've updated the list of models in this commit), and I've manually checked in the repl that simulations run correctly (distributed / plots).