v0.3.0 [YANKED]

Added

• shrink_to_fit() method on World for shrinking the World's current allocation to the minimum required for the current data.
• ContainsComponent, ContainsEntities, ContainsEntity, ContainsParQuery, and ContainsQuery traits to indicate more specific bounds on registries.

Changed

• Removed unnecessary generic bounds on result::Iter, result::ParIter, and entities::Batch.
• Simplified trait bounds on System::run() and ParSystem::run(), improving usability for users implementing these traits.
• Renamed Seal traits to Sealed to match common convention.

Fixed

• Memory is no longer leaked after clearing a populated World and then extending a previously populated archetype.
• Traits with bounds on internal traits are now properly sealed.
• stages! macro now correctly parses system command with no trailing comma.

v0.2.0

Added

• query() method on Entry for viewing components of a single entity.
• Documentation for some associated types and enum variants that was missing.

Changed

• query() and par_query() methods on World now require a Query parameter.
• Performance improvements through canonicalization of heterogeneous lists instead of internal type index hash tables.
• insert(), extend(), query(), and par_query() methods on World now check at compile-time that components are contained within the registry.
• add() and remove() methods on Entry now check at compile-time that components are contained within the registry.

v0.1.0

Added

• registry! declarative macro for easily defining a heterogeneous list of components making up a registry.
• World for containing archetypal component data, generic over a registry of components.
• entity! and entities! declarative macro for easily defining heterogeneous lists of components making up entities.
• insert() and extend() methods on World for storing entities of arbitrary components.
• views! declarative macro for easily defining heterogeneous lists of views.
• Various filter types for restricting what entities are viewed when querying.
• query() and par_query() methods on World for viewing components of entities stored.
• System and ParSystem traits allowing users to define systems.
• run_system() and run_par_system() methods on World for running user-defined systems.
• Builder API for defining a Schedule at run-time.
• run_schedule() method on World for optimally running a schedule of systems.
• entity::Identifier type for uniquely identifying a stored entity.
• contains() method for checking whether an entity exists in a World.
• remove() method for removing an existing entity in a World.
• entry() method on World for obtaining an Entry for a contained entity.
• add() and remove() methods on Entry for modifying an entity's components.
• clear() method on World for removing all entities.
• len() and is_empty() methods for determining how many entities are stored in a World.
• serde feature to enable serialization and deserialization of World.
• rayon feature to enable parallel processing of components through the various par_ methods.