Bugs fix

v0.1.21, November 2025
Python:

• Added center and scale parameters to procrustes_alignment (Issue #135).
• Clarified documentation for GradientMaps.fit regarding alignment methods (Issue #134).
• Improved warning message for disconnected graphs in GradientMaps (Issue #132).
• Added support for FreeSurfer surface file extensions (.pial, .white, .orig, .sphere, .inflated, .smoothwm) in read_surface (Issue #133).