* include n_tune, n_draws and t_sampling in SamplerReport
* count tune/draw samples instead of trusting parameters (because of KeyboardInterrupt)
* fall back to tune and len(trace) if tune stat is unavailable
* add test for SamplerReport n_tune and n_draws
* clarify that n_tune are not necessarily in the trace
* use actual number of chains to compute totals
* mention new SamplerReport properties in release notes
Co-authored-by: Michael Osthege <m.osthege@fz-juelich.de>