Add changelog

Author: gagik

CHANGELOG.md

@@ -1,6 +1,7 @@
 ## vNext (TBD)
 
 ### Enhancements
+* Removed backing fields of Realm Objects' properties which should provide minor improvements to memory used by Realm Objects (Issue [#2647](https://github.com/realm/realm-dotnet/issues/2994))
 * Added two extension methods on `IDictionary` to get an `IQueryable` collection wrapping the dictionary's values:
   * `dictionary.AsRealmQueryable()` allows you to get a `IQueryable<T>` from `IDictionary<string, T>` that can be then treated as a regular queryable collection and filtered/ordered with LINQ or `Filter(string)`.
   * `dictionary.Filter(query, arguments)` will filter the list and return a filtered collection of dictionary's values. It is roughly equivalent to `dictionary.AsRealmQueryable().Filter(query, arguments)`.
@@ -10,6 +11,7 @@
 * Flexible sync will now wait for the server to have sent all pending history after a bootstrap before marking a subscription as Complete. (Core upgrade)
 
 ### Fixed
+* Fixed issue where Realm parameters' initialization would get run twice, resulting in unexpected behavior.
 * Prevented `IEmbeddedObject`s and `IAsymmetricObject`s from being used as `RealmValue`s when added to a realm, and displaying more meaningful error messages.
 * Fix a use-after-free if the last external reference to an encrypted Realm was closed between when a client reset error was received and when the download of the new Realm began. (Core upgrade)
 * Fixed an assertion failure during client reset with recovery when recovering a list operation on an embedded object that has a link column in the path prefix to the list from the top level object. (Core upgrade)