ExoPlanetLab: Bayesian orbit fitting of Gaia epoch astrometry and radial velocities

First public release of ExoPlanetLab: Bayesian orbit fitting of Gaia epoch astrometry, alone or together with radial velocities and relative astrometry.

• Keplerian orbits (Thiele-Innes constants) fitted to Gaia DR4 epoch astrometry through the projection of the single-star fit; the single-star parameters are recovered for every posterior draw.
• Gaussian or Student-t noise per measurement, a robust Keplerian periodogram, and ranked starting candidates.
• Five samplers: tempered emcee, dynesty, nessai, and the reversible-jump rjmcmc and rjflow.
• Evidence ladder for the number of companions, acceleration and scan-angle models, upper limits on undetected companions, and injection tests.
• Run from a configuration file or the command line (epl.py), with batch and rerun tools.

The user guide is ExoPlanetLabDoc/ExoPlanetLab.pdf; the full list of changes is in CHANGELOG.md.