Release 2.6

Release on Pypi.

* [TVB-2827] - Support h5py>3
* [TVB-3014] - Generate a BIDS demo dataset
* [TVB-3015] - EEG monitor drops data on H5 export
* [TVB-2900] - TVB-BIDS derivatives compatibility
* [TVB-3009] - Rename scientific_library into tvb_library and framework
* [TVB-3011] - Review and merge PR from GSOC on plotting tools
* [TVB-3006] - Integrate Sonar with tvb code