New features
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* Sonata support
* Python 3 support
* Added FilterNet simulator
* Cell variable recordings for biophysical and point network models.
* Added current clamp support for biophysical and point network models.
* NeuroML2 support for BioNet
* segmented targetd
* Multicompartment recordings.
* Extracellular stimulation and recordings in BioNet
* All-active and periosmatic cell-type models in BioNet
* STP synaptic models in BioNet
* Capable of batch processing neurons and connections in PointNet