v0.86.0 [2020-09-21] Features 56586dc operator profiler (#3176) 0819086 add duration conversion (#3201) fcbc75d add naive bayes classification (#3194) Bug fixes 6a0169c Reset pointer after sacnning invalid unicode 08a4bc7 catch references to non-existent columns (#3135) bbaf56b propagate span context to source.Run (#3157)