benchmarking JuliaBUGS towards other similar packages

[sunxd3]

some good targets:

• Stan
• "modern" BUGS implementations
  • MultiBUGS
  • JAGS
  • Nimble

[yebai]

Let's also compare Nimble's capability for programmable inference and code generation (C++) against JuliaBUGS. The programmable inference in Nimble is loosely connected to graph traversal in JuliaBUGS and maps that to different MCMC samplers. programmable inference are probably easier to perform in JuliaBUGS due to the AbstractMCMC interface and also the everything is written-in-Julia property (i.e. avoiding the two-language problem).