For time-series collections, the `expireAfterSeconds` options is now specified as a part of the top-level collection options, rather than being nested inside the `timeseries` subobject. i.e.
{create: "coll", timeseries:
Unknown macro: {timeField}
, expireAfterSeconds: 10}
When manually creating a time-series buckets collection, the `clusteredIndex` option now takes a boolean, rather than an object. i.e.
Unknown macro: {create}
When using collMod to change the `expireAfterSeconds` of a time-series collection, `expireAfterSeconds` is now a top-level option and the previous `clusteredIndex` option has been removed. i.e.
Unknown macro: {collMod}