Improve visualisation

[a-t-0]

Priority: Show radiation

• [x] Include legend on the neuron colours.
• [x] Include legend on the edge colours.
• [x] Swap next round and selector neuron positions.

Neuron Colours

• [x] Original neuron is dark blue.
• [ ] n-th redundant neuron is (more) purple and smaller.
• [x] Spiking neuron is green and a bit bigger.
• [ ] #212

Edge Colours

• [x] Blue lines go from: all original neurons to all other original neurons.
• [x] Purple lines go from each original neurons to each redundant neuron.
  • [x] Purple lines go from every redundant neuron.
  • [x] Excited synapses have a wave symbol on them, are coloured Yellow and a bit thicker.
  • [x] Outgoing synapses of dead neurons are dark red.
  • [x] synapses of a spiking neuron are green (and a bit thicker).
• [ ] #211

Other

• [x] Make the legend align in top left.
• [x] Include title in pdf.
• [ ] Include all recurrent synapses
• [ ] Include all synapses among redundant neurons
• [x] Put redundant neurons in a circle.
• [x] Add the neuron names/identifier on the x-axis
  • [ ] put the "next round" neuron line on the y-axis, and put the "selector" name on the x-axis.