TimeUnit week ("w") inconsistency

[lekrus]

Hello,

In the latest NEST (5.5) and Elasticsearch (5.5):
Trying to use TimeUnit as in the code below:

.ExponentialDate(gd => gd
     .Field("update_date")
     .Origin(DateMath.Now)
     .Offset(TimeSpan.FromDays(60))

Offset expects Time type.
When I specify Offset("60d") above the query works fine, as "d" is supported by Elasticsearch.
When I specify Offset(TimeSpan.FromDays(60)), NEST transforms that to the following JSON:

"exp": {
    "update_date": {
    "origin": "now",
    "scale": "8.57142857142857w"

and as soon as "w" (week) seems like not supported for TimeUnits the exception is thrown.

Supported TimeUnits:
https://www.elastic.co/guide/en/elasticsearch/reference/5.5/common-options.html#time-units
NEST Time:
https://www.elastic.co/guide/en/elasticsearch/client/net-api/5.x/time-units.html

Please update, thank you!

[russcam]

Thanks for reporting @lekrus; this is a bug and will be fixed in the next release.

[russcam]

This will be in the 5.6.0 release