Release v1.6.2 (2026/04/02)

Highlights

This is a minor release that includes a few bug fixes for kernel density.
This is the last release before the major v2.0.0 release, which will include a complete refactor of the codebase with C++.

Corrected a calculation in the combine_kernels subroutine in src/acqui.f90 so that ker_density(2,:,:,:) now uses sen_vsRc instead of sen_vpRc, ensuring the correct sensitivity kernel is applied for density updates. (#51 )
Added zlib to the list of dependencies in the Conda environment setup in .github/workflows/build.yml to ensure all required libraries are available during the build process.
Fixes a critical bug in the gradient update logic within the steepest_descent subroutine. The conditional branches for use_alpha_beta_rho were previously inverted, causing incorrect model parameter updates during seismic tomography inversion. (#49 )