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• API addition: Adds 'createComponent()' method to Engine class. Commit 07fc2ba6bcd9996c472c651b56b57b32fd8fd3a7.
• API addition: Adds 'createEntity()' method to Engine class. Commit 45dd7e0e4a52c8d65f520fac4e8f4e83471b215b.
• API addition: Adds 'addAndReturn()' method to Entity class. Commit 423148a2719873efb50d4f2b3982c247df4fceca.
• Bug fix: Fixes systems going out of priority order after removal. Issue #237.
• Bug fix: Fixes returning pooled entity to the entity pool twice. Issue #221.
• Update: uses Travis for CI. Commit c4265eff694cfb34eaef1bdd929ee398c1ccfa64.
• Update: uses Libgdx 1.9.4.

• Bug fix: Engine doesn't use EntitySystem iterator(). Issue #209.
• Bug fix: Fixes Engine left unusable, in the updating state, after an uncaught exception in a subsystem. Issue #210.
• Bug fix: Fixes FamilyManager not cleaning up properly when a triggering a listener that throws. Issue #210.

• API addition: expose IntervalSystem interval value (read-only). Commit 5277cbe83264d0ddc851a823232f51c350e9c387.
• Bug fix: fixed pending entity operations not being processed in the right order. Issue #197.
• Bug fix: fixed adding component in empty family EntityListener causing wrong EntityListener calls. Issue #203.
• Bug fix: fixed some entity operations not being performed under special circumstances. Commit c45ba3b34860121571eb9a660a76bc82ac0a1a96.
• Internals: split Engine internals into loosely coupled, single responsibility smaller classes. Issue #178.
• Update: uses Libgdx 1.8.0

• Gradle: we got rid of the Eclipse projects and now use Gradle to manage our dependencies and build process. Commit 3cd93f2c17fd65470a60dfa2af7d84c2ee7e7865.
• Maven Central: Ashley is now available from Maven Central, which makes it dead easy for your project to depend on it. In Gradle, add the following dependency: compile "com.badlogicgames.ashley:ashley:1.0.1".
• Jenkins build: Mario kindly offered us some server time to make sure Ashley is always stable. * Unit tests: there are unit tests for pretty much every component in Ashley. They are run after every commit by our Jenkins job.
• Immutable collections: core Ashley classes now return ImmutableArray and ImmutableIntMap references, making it harder for client code to break the system.
• Family filtering: now we get the collection of entities that have a set of components, have at least one component from a given set and do not have a single component from another given set. Commit 9492d14a3e5cf4ad0d87305f8f7bb298bb8d687a.
• GWT compatibility: you can now use Ashley for HTML5 games through the magic of GWT and Libgdx.
• Depends on gdx core: this has allowed us to remove all the duplicated optimised container classes and gives us a GWT compatible reflection API. Some might say it's a big dependency but we do believe the pros outweigh the cons. Commit 81d9a2e5f38df186f4b147b82ede274c950795b6.
• Cleanup and bug fixes.

• Performance improvements: massive performance gains with O(1) component retrieval through ComponentMapper and the use of Array<Entity> rather than IntMap<Entity>. Unfortunately this changes the API slightly, but hopefully you guys will appreciate the benefits. Commit 8c98e9799bb6cc65cf61669eed36d7f8f04a2da4.
• Complete Ashley manual: now the wiki has a lot more content, it fully covers Ashley. The rest is sugar.
• API Cleanup: renames Family.getFamilyFor() to Family.getFor() for simplicity. Commit 3182782dfd71e13f0bf1c03490512d91921117a3.
• Configurable pools: PooledEngine now accepts the initial and maximum sizes for the entity and components pools. This will add a lot more flexibility to bigger games. Commit 569f089f9236dc8c2da09f4fe3b4d33880745d8a.
• Libgdx 1.3.0: Ashley now depends on gdx-core 1.3.0. Commit aa97ecbf8344ea6de5afeb608ac65ccd12e80965.

• API addition: people requested to put Entity#getComponent(Class) back in, so we accepted SgtCODFish's PR. ComponentMapper is still the most efficient and encouraged method to retrieve an entity's components. Issue #51.
• API addition: added PooledEngine#clearPools() to delete unused entity and component pool memory. Commit 28372993d60d6e2f460f36e27df953936e550933.
• API addition: adds EntitySystem#setProcessing(boolean) so as to be able to enable/disable systems at will. Commit 188239aeaa3e99c9bd7ebab268a9e9959d2a09c2.
• API addition: adds Engine#getSystems(). Commit 8f54a2a5ee97c87cba57bd187b4aeb2aef7ec831.
• API addition: you can now listen to entity events on a per family basis. Commit f90d12932bd958061eb0ad33b925cf6457880c46.
• Crash fix: things would blow up if you deleted entities from IteratingSystem#processEntity(). Commit d5ace4e43a32c27fec82821b90b3e55c89ad373f.
• Bug fix: removing listeners while dispatching a Signal would make other listeners miss the event. Thanks to vlaaad for the PR! Issue #52.
• Bug fix: some entities were skipped if the user removed an entity from the engine mid system update. Removing an entity from a system by changing its components mid iteration also caused problems, which are now solved. Issue #44.
• Bug fix: there was a problem with family membership not being properly updated when removing a component from an entity was supposed to result in said entity being added to the family. This only affected families that exclude components. Issue #56.
• Internals: small performance improvement. Issue #59.
• Others: added benchmark suite to compare Ashley's performance with Atermis'. Commit d6fec987e1ce493c559a7e8fdea7fc8f6cd82d7b.

• API addition: adds IntervalSystem and IntervalIteratingSystem, which are updated at a fixed interval. Commit 47bf907b15ad8ed4297a10eb6b6b311e1542dcb8.
• API addition: adds getEntities() to IteratingSystem and IntervalIteratingSystem. Commit f1ccdbea63a175f2a76c26b46661998b6a131c59.
• API change: entities use long as ID. Changes entity.getIndex() for entity.getId(). Ids are reset to 0 after the entity is removed from the engine. Commit 6f9d2b78c34f72d03e76d40c8d9704f1c763e59a.
• Bug fix: we finally got rid of the issues related to deleting entities and adding/removing components mid system processing. Commit a2a63f4e42e09e3221331b2333e675b3a4ab6fe3.
• Bug fix: fixes problem with removing pooled entities. #64.
• Bug fix: fixes pooled entities not being fully reset. Issue #72.
• Bug fix: fixes broken GWT compatibility. Commit 9a01938713946cad0c31d21ecb723443ccf6b2ff.

Bug fix: fixed IllegalArgumentException thrown when trying to remove components from an already reset entity. The call has no effect now. Thanks for that SgtCoDFish. Issue #77. Bug fix: fixed family match failure due to silly silly hashing. Issue #78. Bug fix: fixed entity.getId() always returning 0 for recycled pooled entities. Issue #82. Bug fix: fixed nested iteration problem caused by adding/removing entities from an entity added/removed listener handler. Issue #81. Bug fix: fixed missing type error in GWT when using PooledEngine. GWT should be quite smooth now. Commit cb3347239504972b86653efab8d9051ec5366760.

• API: we now use a builder pattern to create Family objects. More about it on the wiki. Commit addition974f12f6d53c5d92992ddd6bf09edd44937d9e66.
• API addition: new SortedIteratingSystem by Lusito. Commit 905b26895536c57d9d42d994e62237c60f909e0c.
• API addition: now ImmutableArray implements the Iterable interface, which makes it a lot easier to iterate over entity collections. Commit c39b09772a4514c180846204ce55cdc2eae71cc5.
• Bug fix: avoid double entity removal by accident. Commit 1c861a27b85d8b98b854814c2820f80d001ca715.
• Bug fix: fixes StackOverflowError when processing entity operations. Issue #103.
• Bug fixes: fixes freeze when calling removeAllEntities(). Issue #101.
• Improvement: we made a bunch of changes that increase performance.