Tobias Grieger c1e8d3a63f Clarify documentation of probing
- Add a large detailed comment about the use and necessity of
  both the follower and leader probing optimization
- fix the log message in stepLeader that previously mixed up the
  log term for the rejection and the index of the append
- improve the test via subtests
- add some verbiage in findConflictByTerm around first index
2021-02-15 09:47:18 +01:00
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