Add option to allow the user to control where DocumentReference.getDocument() and CollectionReference.getDocuments() fetches from. By default, it fetches from the server (if possible) and falls back to the local cache. It's now possible to alternatively fetch from the local cache only, or to fetch from the server only (though in the server only case, latency compensation is still enabled).
* Replace `QueryListenOptions` with simple booleans
Instead of calling
addSnapshotListener(
options:QueryListenOptions.includeQueryMetadataChanges()
.includeDocumentMetadataChanges())
call
addSnapshotListener(includeMetadataChanges:true)
Also change `QuerySnapshot.documentChanges()` into a method which
optionally takes `includeMetadataChanges:true`. By default even when
listening to a query with `inlcudeMetadataChanges:true` metadata-only
document changes are suppressed because they're confusing.
* Revert QuerySnapshot.documentChanges back to a property
Add usage.
* implement queryFilteredUsingPredicate in FIRQuery;
* add unit test and integration test for queryFilteredUsingPredicate;
* project change of adding the FIRQueryTests.m file;
* refactoring queryFilteredUsingPredicate to split logic into two helpers;
* Replacing FIR_SWIFT_NAME macro with NS_SWIFT_NAME.
This pushes the minimum Xcode version to 7.3, as NS_SWIFT_NAME was
limited before that version (which is why the macro was introduced in
the first place).
* Fixed FIRMessaging header
Brian Chen