Merge all other contributions

New features
Fix Windows bugs
Not sure I follow that.   Which threads see not on sync...tail and watch?  All this is doing is letting one give up control so it doesn't lock out the caller....otherwise sincedb can become stale.   I have tested this for months without an issue...where prior start and stop constantly were having issues because sincedb was not flushed out.   I don't have the code in front of me because I am away on vacation but in the the release, I also fixed a start stop timing issue that is documented in the update . Maybe this is what you are referring to...but hard to tell from the statement

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