- Resolved an issue in Pathfinder's multithreading which lead to non-reproducible results (#3239)
- Improved the human-readability of the output of the JSON writer class (#3227)
- Resolved various compiler warnings (#3228, #3234)
- Added hooks to adaptive sampler methods to write adapted metric to JSON file. (#3230, #3248)
- Changed bfgs and lbfgs's error messaging behavior so that the message is not split between stderr and stdout but is entirely sent to stderr. (#3238)
- Fixed a bug in the stan opencl assign tests (#3219)
- Updated PSIS to not add back the max and return the unnormalized resample ratios for stability (#3243)
- Fixed an issue where trying to compute the potential scale reduction factor on an empty set of draws would lead to a crash (#3246)
- Added flags to the Pathfinder service functions for turning off resampling and the calculation of the lp for the approximate draws. (#3249)
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