GfTool 0.11.1 release

Internal improvements

• Officially support Python 3.12 (3d3afa0).
• Comply with NumPy 2 syntax (6980098).

Documentation

• Enforce numpydoc style.
• Update expired links (7f1aa09).

Bug fixes

• Improve slight inaccuracies of ~gftool.lattice.sc.dos.
• Fix vectorization of ~gftool.linearprediction functions.