Alexis Pereda

Replace `spectrum_lines` source energy type by the three cases that existed in GATE 9, under `spectrum`. Adds `spectrum_type` field with three possible values: - `discrete` (old `spectrum_lines`); - `histogram`; -...

A new system to configure filters for actors. The main idea is to be able to write for example: ```py actors.filter = "kinetic_energy < 20 * MeV or particle_name ==...

This PR adds a pseudo-actor, `GateInternalActions`, automatically added as `_gate_internal_actions`. This currently does nothing but it will be used to implement Geant4-DNA chemistry, in order to trigger the chemistry stage...

This commit adds the possibility for actors to execute code near the end of the Geant4 PreInit state, before entering in Idle, but after main simulation elements are initialised (physics,...