Re-name solver to stepper
The problem
The euler forward and RK4 methods are really methods about how you step a model forward. They do not specify everything about how to solve a model (e.g. they know nothing about inputs or outputs) hence we should rename these (and their base class) from solver to stepper.
Definition of "done"
-
#51 (closed) -
re-named solver to stepper for these classes -
split out the actual solving stuff (e.g. solve_ivp) and stepping stuff into different folders
Additional context
First draft happened in !63 (closed)
Edited by Zebedee Nicholls