• this is mainly a bug fix release
• adds Brune STF
• adds power-law slip weakening friction law

many thanks for your contributions to this version:
Hom Nath Gharti, Daniel Peter, Huihui Weng

New in SPECFEM3D v4.1.0:

• HDF5 file IO support
• local time stepping (LTS)
• strain seismograms
• movie output for stresses
• reuse feature for external STF
• various updates and improvements (including updated HIP and CUDA support)

many thanks for all your contributions to this version:
Rahul Garg, Hom Nath Gharti, Masaru Nagaso, Elif Oral, Daniel Peter

New in SPECFEM3D 4.0.0:

• various code improvements (fault solver, FK/DSM/AxiSEM coupling, gravity perturbations, energy integrals)
• inverse problem module
• parallel heuristic mesh decomposer
• ADIOS2 file I/O support
• ASDF seismogram output
• HIP GPU support

many thanks for all your contributions to this version:
Rafael Almada, Jean-Paul Ampuero, Etienne Bachmann, Kangchen Bai, Stephen Beller, Jordan Bishop, Alexis Bottero, Emanuele Casarotti, Clement Durochat, Rene Gassmoeller, Hom Nath Gharti, Leopold Grinberg, Aakash Gupta, Foivos Karakostas, Dimitri Komatitsch, Qinya Liu, Geordie McBain, Ryan Modrak, Vadim Monteiller, Masaru Nagaso, Elif Oral, Daniel Peter, Elliott Sales de Andrade, James Smith, Carl Tape, Eduardo Valero Cano, Huihui Weng, Zhinan Xie