Rename faketime.AutoAdvance parameter to start for clarity
Clarify faketime.ClockTimeWithOffset.Advance documentation
Refactor `faketime.TimeAdvance`:
Add `faketime.NewAutoAdvance` to create auto-advancing
`TimeAdvance` clocks.
Refactor faketime.NewTimeAdvance to return non-auto-advancing clocks,
which can still be explicitly advanced.
Removes the now unused `autoDelta` parameter, since it is always 0.
Rename function to `sm.setupCachesAndIndexManagers`
It matches the current implementation better.
Unexport `indexblob.ManagerV1.epochMgr`
Rename function for clarity to `advanceEpochMarker`
Cleanup logs after cleaning up epoch manager.
This is consistent with quick maintenance as well.
Make 'def' a test-local variable instead of a package-level
variable, it is not used outside this test.
Cleanup epoch test newTestEnv()
Misc:
* Reword comment and fix typo
* Fix log message
* `log.Debug` for non-formatted output
