distributedlock

### Proposed change Allow idle timeout (currently defaulted to 600s) to be specified as a `dict` or some data structure to support adaptive idle timeout based on on-peak and off-peak...

fix: add safety for delete operations to prevent full dir wipeouts

1

#124 and #249 are particularly dangerous issues where entire directories are being wiped out caused by this delete race condition. This adds safety to prevent that from happening. I've preserved...