Calls GET /studies/{id}/log?download=false&entryLimit=. JATOS streams
the log as newline-delimited JSON; each line becomes one row. Column
names follow the log entry fields (converted to snake case), which vary
between JATOS versions and entry types, so downstream code should select
columns by name defensively.
Usage
jatos_study_log(study_id, limit = 100, conn = jatos_connection())