first sbc plot with stanify

[hyunjimoon]

Fifty synthetic data, from this ode function and this generator.
(edit 0214.2023: link doesn't work now, but it is classic inventory management model with process noise (sd = .1) added, 2hier_asy_S1N20Q2P2H0R1_M1000_ps0.1 to be specific)

I need coverage band to judge its uniformity, but considering multimodal posteriors below my prior is this would fail the test. If uniformity test passes, our diagnostics have rooms for improvement. e.g. @Dashadower and I are designing divergence-logposterior (lp__) sbc rank plot for this.

[hyunjimoon]

Michael's commented to look at the empirical integrated autocorrelation length to judge how effective the exploration might be, instead of looking at lp__ traceplots