Align support for SED-ML with SED-ML files exported by pyNeuroML

[jonrkarr]

PyNeuroML can convert LEMS files to SED-ML L1V1

Example:

pip install pyneuroml
pynml tests/fixtures/LEMS_NML2_Ex5_DetCell.xml -sedml

This creates a file in the same folder as the LEMs file with the .sedml extension ( tests/fixtures/LEMS_NML2_Ex5_DetCell.sedml).

I don't think PyNeuroML can read these files.

We should try to align our usage of NeuroML/SED-ML with this (specifically targets for model elements).

[jonrkarr]

This package is aligned with the SED-ML exported by pyNeuroML with the one exception that pyNeuroML uses urn:sedml:language:neuroml2 rather than a URN for LEMS. See also NeuroML/org.neuroml.export#113.

urn:sedml:language:neuroml2 doesn't make sense to me because the direct model file is a LEMS file. Also the URN for NeuroML 2 should be urn:sedml:language:neuroml.version-2_1.

[jonrkarr]

Reported as NeuroML/org.neuroml.export#76