* Add support for SpEL expressions via @Value.
* Simplify readCollectionOrArray to consider properly nested lists and maps
* Simplify readMap to allow reading generic maps and entities in maps.
* Report a fallback TypeInformation in DefaultElasticsearchTypeMapper to properly convert nested maps.
We now no longer rely on isSimpleType when writing Maps. This is the preparation to consider Map as simple type.
Resolves#1676.
See #1675.
(cherry picked from commit 877de9c51ce94e5efe294944cf752b20ac2f2cd6)