sampler chaining: repeat appearances of a sampler results in overwritten files

[jessmuir]

Hello! I've been experimenting with sampler chaining, trying to use multiple calls to maxlike chained together like

[runtime]
sampler = maxlike maxlike maxlike maxlike

I'd be interested in being able to see what the output of each of, say, four sequential maxlike searches is, to gauge the impact of running it once vs twice vs three times etc. However, it seems like each time maxlike is run, it overwrites the output from the previous call. This means that if my wall time runs out in the middle of the 4th maxlike call, rather than being able to see the intermediate outputs from calls 1, 2 and 3, I'm just left with one empty file. If possible, it could be useful to adjust filenames for these intermediate output files to avoid this.

[joezuntz]

Fixed in version 3.17. It now numbers the files if there is a repeated sampler (ignoring the end one).