Mdc timeslides

add capability to do "MDC timeslides"-- meaning we can take burst style MDCs and inject them at arbitrary GPS times. This is a pretty minor change, and doesn't change anything about the normal BW mode of running.

assigned to @tyson-littenberg

added 1 commit

• 044db518 - Change timeshift handling to accound for different segment start time possibilities

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@tyson-littenberg if you have like 5 spare minutes do you mind giving this a once over to see if things look sane? thanks!

mentioned in commit 208b8da3

merged