Viperleed

**Note:** This release if for archival purposes.

Fixes and error handling (writing error messages to where one would expect them).

**Note:** This release if for archival purposes.

Fixes and error handling (writing error messages to where one would expect them).

**Note** This release if for archival purposes. Changelog is taken from the main ViPErLEED repository.

- removed random_.c (replaced with Fortran version)
- removed redundant lib.mpi files.

**Note** This release if for archival purposes. Changelog is taken from the main ViPErLEED repository.

- Removed readin of beams to calculate PQFEX, which is redundant to the beam indices NPU specifying beams to calculate from the beamlist. This does not affect functionality, as intensities for all beams not contained in NPU would anyway have been set to zero. Note that this modifies the structure of FIN (the explicit second list of beams by index is now removed).
- Fixed another precision issue affecting calculations for large LMAX

**Note:** This release if for archival purposes. Changelog is taken from the main ViPErLEED repository.

- refcalc: major improvements to speed over v1.71
- fixed an issue where R-factor functions of TensErLEED in both standard rfac and in the search exhibited sudden jumps for some variations, especially clear in error calculations.

**Note** This release if for archival purposes. Changelog is taken from the main ViPErLEED repository.