Realm breaking changes

• v10.53.1 \u2192 v20.0.0breaking

  All Atlas App Services and Atlas Device Sync functionality has been removed. Users of Atlas Device Sync should pin to v10.

• v10.53.1 \u2192 v20.0.0breaking

  Queries on AnyRealmValue properties previously considered strings to be equivalent to Data containing the UTF-8 encoded string. Strings and Data are now considered different types and queries for one of them will not match the other.

• v10.53.1 \u2192 v20.0.0breaking

  Realms are no longer autoreleased when initialized. This means that code along the lines of the following will no longer work: ```Swift try! Realm().beginWrite() try! Realm().create(MyObject.self, value: ...) try! Realm().commitWrite() ``` This was a pattern which was somewhat natural with the original version of the objective-c API, but only worked in debug builds and would fail in release builds. We decided to make it consistently work by forcing the Realm to be autoreleased rather than let us

• v10.53.1 \u2192 v20.0.0breaking

  Iterating a Map now produces the tuple `(key: KeyType, value: ValueType)` rather than a very similar struct, and `.asKeyValueSequence()` has been removed. This aligns `Map` with `Dictionary` and makes many operations defined by `Sequence` work on `Map`.

• v10.53.1 \u2192 v20.0.0breaking

  Passing an empty array for notification keypaths to filter on (e.g. `obj.observe(keyPaths: [])`) was treated the same as passing `nil`, i.e. no filtering was done. It now instead observes no keypaths. For objects this means it will only report the object being deleted, and for collections it will only report collection-level changes and not changes to the objects inside the collection.

• v10.48.1 \u2192 v10.49.0breaking

  Drop support for opening pre-v5.0.0 Realm files.

• v10.45.3 \u2192 v10.46.0breaking

  The `schemaVersion` field of `Realm.Configuration` must now always be zero for synchronized Realms. Schema versions are currently not applicable to synchronized Realms and the field was previously not read.

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