0.8.0

• Find specifications: collection :find [?e ...], tuple :find [?e ?v], and scalar :find ?e .
• Support for :db/isComponent (issue #3)
• Support for nested maps in transact! (also fixes #38)
• [ BREAKING ] Custom aggregate fns must be called via special syntax (aggregate keyword): (q '[:find (aggregate ?myfn ?e) :in $ ?myfn ...]). Built-in aggregates work as before: (q '[:find (count ?e) ...]
• Return nil from entity when passed nil eid (issue #47)
• Transaction data is now validated, with proper error messages (also fixes #48)

0.7.2

• Fixed a bug with function call after function relation was filtered out (issue #44)

0.7.1

Fixed a bug when emtpy coll in input was not creating empty relation

0.7.0

• BTSet and its slices (returned by datoms/seek-datoms calls) now support fast reverse iteration via reverse.
• (datascript/datom e a v & [tx added]) call for creating new datoms
• Added missing aggregate funs: avg, median, variance, stddev and count-distinct (issue #42, thx @montyxcantsin)
• min and max aggregates use comparator instead of default js < comparison
• Fixed a bug when fn inside a query on empty relation returned non-empty result
• Filtered DB support via filter

0.6.0

• [ BREAKING ] Entity ids and transaction ids now have to be numbers, attributes can only be keywords (strings if used from JS)
• New method init-db for fast creation of DB from existing datoms (useful for e.g. initialization from serialized state)
• Improved performance of transact! (~20%) and initial database population (init-db, db-from-reader, ~800%)

0.5.2

• Externs provided via deps.cljs — no need to manually specify externs when using datascript dependency

0.5.1

• Ability to pass inputs (predicates/functions bindings) down to rules (issues #28 #29)

0.5.0

This is breaking release with no new features, just repacked JS version of DataScript so it can be used via modern JS dependency managers:

• Javascript version is now packaged as a proper CommonJS/RequireJS module (include via script tag still supported) (issue #39)
• Published to npm: npmjs.org/package/datascript
• [ BREAKING ] Javascript namespace is renamed from datascript.js to datascript

0.4.2

• Reference transaction id inside transaction by using :db/current-tx instead of entity id (issue #32)
• You can get id of transaction from TxReport: (get-in tx-report [:tempids :db/current-tx])
• Ability to pass arbitrary metadata along with transaction (third argument to transact!) and read it in listener callback (:tx-meta key of TxReport) (issue #32)

0.4.1

• Added :db.fn/cas transaction function (issue #20, thx @montyxcantsin)
• Added get-some, get-else, misssing? query functions (issue #21, thx @montyxcantsin)
• Fixed touch breaking entity cache (issue #17)
• Added ground fn (issue #25)
• Fixed query predicate/fn calls without free variables
• Retract incoming entity references on :db.fn/retractEntity (issue #18)
• You can now use reverse relation name when transacting entity as a map