Add Bouhadjar sequence learning network tutorial

[clinssen]

Should be merged after #1027.

• Add the following notes:

  lambda_plus is increasing facilitation: too many daps, decrease facilitation!
  lambda_minus is increasing depression: too many daps, increase depression!
  if you see overlap, increase lambda_h a bit
  

• eliminate the use of the "parameters" Python package

[github-actions]

Bencher Report

Branch	1026/merge
Testbed	ubuntu-latest

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Benchmark	Latency	nanoseconds (ns)
tests/nest_continuous_benchmarking/test_nest_continuous_benchmarking.py::TestNESTContinuousBenchmarking::test_stdp_nn_synapse	📈 view plot ⚠️ NO THRESHOLD	3,867,834,361.40

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[clinssen]

It seems as though the second line in the following snippet from the notebook causes an extreme memory consumption:

connections = nest.GetConnections(synapse_model=...)
connections.set({'Wmin': connections.weight})

There are around 165000 connections.

Edit: spun off to nest/nest-simulator#3359.

[pnbabu]

Thanks for this excellent tutorial! I have a few minor comments:

• When you describe the different terms in the STDP rule in the text, could you refer to the equation by number? For example, the second term on the right-hand side in (1)...
• Any reason behind setting the number of threads to 1?
• Under "Generating code with NESTML", do we need the try and except?
  • Remove the following lines

"""module_name = "/tmp/nestml_target_68digoes/nestml_27fd8d9de14b408f9e6181b2f2310d41_module.so"
neuron_model_name = "iaf_psc_exp_nonlineardendrite_neuron_nestml__with_stdsp_synapse_nestml"
synapse_model_name = "stdsp_synapse_nestml__with_iaf_psc_exp_nonlineardendrite_neuron_nestml" """

• The fig just before Experiment 2 is a bit hard to read. Can the three panels be a bit further apart?

[clinssen]

@pnbabu: much obliged for the review! I have cleaned up the notebook and the neuron model; this should address all your comments.