Nrn-modeldb-ci

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* Curate more models & some improvements 69
* fix report output path handling
* allow different number of models for reports
* macOS fixes, model curation 76
* macOS: fix --virtual
* GitHub: allow ModelDBRepository to be overriden
* nrnivmodl: disable internal parallelism
* Clean up differences between neuron and neuron-nightly 77
* Report meaningful pipeline status, check gout (https://github.com/neuronsimulator/nrn-modeldb-ci/pull/80)
* runmodels: include model ID in working directory

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* nrn_run use unified_diff from difflib instead of make_table (https://github.com/neuronsimulator/nrn-modeldb-ci/pull/62)
* Add runtimes report for nrnivmodl & model runtimes (https://github.com/neuronsimulator/nrn-modeldb-ci/pull/64)
* utf-8: more debug output when decoding fails (https://github.com/neuronsimulator/nrn-modeldb-ci/pull/66)

b3bda58 : curate 136803 & update PR CI selection of models (52)
c9e6163 : mitigate "can't open DISPLAY" (51)
54d6594 : use platform.machine() (49)

New features
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* `runmodels`: add `--norun` option (32)
* Add `--inplace` option for `runmodels` (43)
* make sed cross-platform (48)

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Run your NEURON for all ModelDB models - at your fingertips !
* Download ModelDB models ( `getmodels` ) and run them ( `runmodels` )
* able to run them in headless mode ( ` --virt` )
* Create interactive HTML reports ( `report2html` )
* Create V1-vs-V2 interactive HTML reports ( `diffreports2html` )
* Compare two different graphical runs of the same model ( `diffgout` )