query: rename ReturnsSize to ReturnsSizes

Author: MichaelMure

mount/mount.go

@@ -227,7 +227,7 @@ func (d *Datastore) Query(master query.Query) (query.Results, error) {
 		Orders:            master.Orders,
 		KeysOnly:          master.KeysOnly,
 		ReturnExpirations: master.ReturnExpirations,
-		ReturnsSize:       master.ReturnsSize,
+		ReturnsSizes:      master.ReturnsSizes,
 	}
 
 	prefix := ds.NewKey(childQuery.Prefix)

query/query.go

@@ -66,7 +66,7 @@ type Query struct {
 	Offset            int      // skip given number of results
 	KeysOnly          bool     // return only keys.
 	ReturnExpirations bool     // return expirations (see TTLDatastore)
-	ReturnsSize       bool     // always return sizes. If not set, datastore impl can return
+	ReturnsSizes      bool     // always return sizes. If not set, datastore impl can return
 	//                         // it anyway if it doesn't involve a performance cost. If KeysOnly
 	//                         // is not set, Size should always be set.
 }