prepare for v2.6.0 release

Version incorporated in BrainVISA 5.1.2

prepare for v2.5.0 release

Version incorporated in BrainVISA 5.1.1

Version incorporated in BrainVISA 5.1.0

Version incorporated in BrainVISA 5.0.4

Version incorporated in BrainVISA 5.0.3

Version incorporated in BrainVISA 5.0.2

Version 2.1.4 (from the 'latest_release' Git tag)

Version incorporated in BrainVISA 5.0.1