v5.0.3

MixedModels v5.0.3

NEWS file.
Diff since v5.0.2

NB: Closed issues and pull requests are sorted temporally and so may
include backports to other versions or work in the development branch for
an upcoming breaking release. Please see the NEWS file
for changes sorted by release.
Closed issues:

• Termination at saddle point (#705)
• Different results with Julia 1.11 on macOS (#833)

Merged pull requests:

• fix display and confint of bootstrap for models without dispersion parameter (#862) (@palday)
• fix lowerbd(::MixedModel) to work as singularity reference check (#864) (@palday)