v2.6.1

Measurements

• Updated $b\to u\ell\nu$ and $B$ mixing measurements (thanks to @alekssmolkovic)

Parameters

• Updated SM coupling constants and CKM parameters
• Updated $B\to K$ form factors to those of arXiv:2305.06301

Observables

• Updated Kaon mixing using u-t unitarity based on arXiv:1911.06822
• Fixed small issues in $B\to K^{(\ast)}\nu\nu$ and $K\to \pi^{(\ast)}\nu\nu$ observables
• Updated prediction of $m_W$

Features

• Update and improve error_budget_pie function
• Fixed diff_plot_th_err function to correctly utilize argument N (thanks to @girishky)
• Updated to ckmutil v1.2.0 and implement new $\beta\gamma$ CKM scheme