• #91 add reactive stream support
• #109 Async driver: add watchIndefinitely function

• #66 Generate custom Jackson serializer/deserializer for simple classes
• #88 add suspendable forEach coroutine version
• #94 First _id is string then the following are ObjectId
• #96 How to receive Set in mongoDb to List in model?
• #99 easier projection for one, two or three fields
• #101 support of ClientSession for sync driver
• #103 Can't deserialize StringId directly
• #107 deserialize Set as LinkedHashSet
• client session support for coroutine (thanks to @augur)

• #83 Java 7 compatibility for kmongo-native
• #84 embedded object with date contained in an inherited data class is not deserialized properly
• #85 ObjectId is not properly deserialized in a String property when property is inherited
• #87 bump version to kotlin 1.3 and coroutines 1.0

• #79 add MongoDatabase#withKMongo & MongoCollection.withKMongo
• #80 memory leak in Any.json
• #81 typed queries perf improvement: cache path of properties

• #78 typed queries: support for map key projection
• #75 add KMongoConfiguration.resetConfiguration method
• add default serializer/deserializer for java.time.ZoneId (thanks to @kspHeller )

• #69 Null or empty filter BSON passed to deleteMany causes "$and/$or/$nor must be a nonempty array"
• #70 property isX: Boolean fails with typed queries
• #71 explicit cast required for orderBy(Map<KProperty<*>, Boolean>)
• #72 deprecate MongoCollection#count
• #73 id not deserialized when using interface as collection class
• #74 typed queries: support for array projection operator

• #59 typed query: pull does not work as expected
• #60 add @DataRegistry annotation to support external @Data annotation
• #62 serialization perf improvements
• #63 flapdoodle: allow to test with replicaset
• #64 sync driver: override MongoIterable.forEach to ensure it is called
• #65 add change stream support for sync driver
• #66 sync driver: ensure the mongo cursor is closed when dealing with MongoIterable
• #67 allow to use both sync & async driver at the same time
• #68 KMongo async: replace deprecated MongoClientSettings

3.7.0 has major improvements and some breaking changes.

• #39 new beta kmongo query dsl - type safe query dsl with optional annotation processor
• #22 rxjava2 support (thanks to @diliuskh)

Breaking changes:

• java driver 3.7 has introduced a ReplaceOptions class to replace UpdateOptions when calling replaceOne method. KMongo has chosen to be not backward compatible and does not keep replaceOne with UpdateOptions parameter.

• In the async driver, the updateOne method has been simplified and it could cause compile error - you may need to name the options parameter when using updateOne

Known issue:

• Fongo test framework is broken by 3.7 java driver. Workaround: build the 3.7 branch of Fongo (no Fongo release is available yet).

3.7.0 is a KMongo release with major improvements. A first release candidate is available.

• #39 new kmongo query dsl - type safe query dsl with optional annotation processor - documentation will be available in a few days
• #22 rxjava2 support (thanks to @diliuskh)

• #52 jackson mapping: add idProperty and idValue extensions
• #53 improve performance by caching id property
• #54 upgrade fongo to support mongo driver 3.6

• switch to de.undercouch version of bson4jackson
• use latest dependencies of java driver (with the fix of https://jira.mongodb.org/browse/JAVA-2778 ), kotlin, jackson, etc.

• #48 Update operations without set
• #49 Shouldn't filter inner object _id on update
• #50 Test dependencies in compile scope

Breaking change

• #43 support BigDecimal <-> Decimal128 mapping for jackson engine: Big Decimal are now persisted as Decimal128 (was double)

Known issue

• The last Fongo version is not compatible with the 3.6.0 version of the java driver (see https://github.com/fakemongo/fongo/issues/316). If you use Fongo, do not upgrade to KMongo 3.6

Other

• #42 jackson Id: support for key serializer/deserializer
• #46 native binding: support for Pair & Triple properties
• #47 native binding: support of Map<Id, *> serialization/deserialization

• #38 native mapping: do not require to use @field:BsonProperty

• #41 support for @ BsonCreator

• #40 experimental support for typed ids

• #37 The main new feature is the experimental support of the new pojo mapping framework introduced in the 3.5.0 version of the java driver ( http://mongodb.github.io/mongo-java-driver/3.5/bson/pojos ). More details available in the documentation: http://litote.org/kmongo/

There are however some other minor breaking changes:

• java.util.Calendar instances was persisted with the timezone and the locale. To be coherent with other java.time classes, only the timestamp is now persisted in UTC by default
• #34 findOneAndReplace, findOneAndUpdate and findOneAndDelete methods had an erroneous non null result. They now return a nullable result.

Other changes:

• @ MongoId is deprecated in favor of @ BsonId
• KMongoConfiguration.defaultCollectionNameBuilder is deprecated in favor of CollectionNameFormatter.defaultCollectionNameBuilder

• #35 Date stored as timestamp by jackson is not retreived by kmongo

• improve coroutines module
• #30 DBObject insert exception
• #31 KMongo sync - add alias for shadowed methods
• #32 KMongo async - add alias for shadowed methods
• #33 add Collection#ensureIndex method

Breaking changes

• #13 KMongoConfiguration.defaultCollectionNameBuilder has bean changed from "lower case" to "camel case" strategy. So if you upgrade to 3.4.0 and use the default strategy, add
  KMongoConfiguration.useLowerCaseCollectionNameBuilder()
  before initializing KMongo, in order to keep the original behaviour.
• #21 @Transient annotated fields or methods are now ignored by default

New features

• #25 KMongo coroutine sub module (thanks to Deny Prasetyo)
• #27 KMongo flapdoodle sub module
• #17 KMongo fongo sub module

Other fixes

• #11 BsonSerializer can only be used with BsonGenerator
• #12 Crash when using Filters.eq(field, Locale.ENGLISH)
• #15 Saving list of DBRef not working correctly
• #16 MongoIdUtil.getIdProperty doesn't grab _id correctly from Map types
• #18 Saving DBRef containing an ObjectId breaks
• #19 updateOneById update parameter inconsistent
• #20 Need a way to bypass document validation on save()

• #7 Add save method
• #8 Add findOne(filter:Bson) method

• #5 Add UpdateOptions option for updateOneById/replaceOneById
• #6 Dates not handled correctly

If you use KMongo before 3.3.4 to save "Date" objects, pass -Dkmongo.oldLocalBehaviour=true to get backward compatibility - the flag will be deleted in 3.5

More details on the Date support here : http://litote.org/kmongo/#date_support