1.7.2

#1861 Limit NEST dependency to Elasticsearch.Net < 2.0.0
#1781 Raise upper limit on Newtonsoft.Json dependency
#1734 DynamicTemplates: Unable to specify FieldIndexOption.NotAnalyzed (generic mapping descriptor missing enum overload for index())
#1682 Add ability to specify type selector on scroll (ty @bytenik)
#1680 Raw query serialization fixes
#1634 Fix NRE in SniffingConnectionPool when running on Mono
#1626 DateHistogram aggregation: parse dates using DateTimeKind.Utc
#1614 Add ability to pass a TextWriter to EnableTrace (ty @ammachado)
#1609 Fix serialization when indexing a JObject (don't treat it as an IEnumerable<object>)
#1600 Mark MultiField property descriptor obsolete (ty @TheFireCookie)
#1595 SuggestOption missing Highlighted field
#1591 Fix missing search and index routing from _cat aliases response (ty @robertlyson)
#1589 Fix premature disposal of request state when using async
#1587 Add support for detect_noop to the update API (ty @robertlyson)
#1570 #1655 Fix serialization of PercolateDescriptor and add missing _score to PercolateResponse (ty @mikelazell)
#1568 Fix minor type in xmldocs (ty @SeanKillen)
#1566 Filter aggregation did not support raw JSON
#1563 Fix serialization of protected_words_path in the word delimitor token filter (ty @robertlyson)
#1599 Add missing RandomScore to FunctionScoreFunctionsDescriptor
#1553 Add HighlightQuery to HighlightFieldDescriptor (ty @Settler)