4.1.2

This is purely a bug fix release, so be sure to update if you're using Preact 4.x.

Bugs Fixed:

• Fix orphaned keyed VNodes not being removed in certain cases, such as when there are adjacent non-orphaned non-keyed VNodes (see preactjs/preact-compat#21)
• When diffing a component against a non-component VNode, if the component render returns a different DOM node, make sure to reclaim the original node. (Issue #73)

4.1.1

• Preact 4 is now officially out of beta. Please still report any bugs you find!
• setState() callbacks should be called with the component as their context.

4.1.0

• Fix multiple camelCase'd CSS properties (#66)
• Fix child component refs not being invoked with null when the associated component is unmounted
• Fix high order component refs linking to parent component when they should link to the child component/node.

4.0.1

• Cancel preliminary support for String refs. Preact core will only be supporting function refs, since String refs are "mostly" deprecated.

4.0.0

• Add support for refs!
• Add support for defaultProps (static property on Components)
• Possibly Breaking Change: cache rendered DOM with components when recycling
• Possibly Breaking Change: don't wipe recycled DOM nodes, simply diff when re-used
• Use setImmediate() to improve setState() performance where available
• Skip empty values when serializing style objects
• Coerce falsey className and style values to an empty string to avoid class="null" and style="null"
• Rename missing component insert from <x-undefined-element> to <undefined>
• Use a Symbol for storing the prop cache where available

3.4.0

• Fix for key behaviour, and don't write keys to the DOM as attributes.

3.3.0

• Performance tuning for a ~10% improvement on DBMonster (basically 10% faster diff algorithm)
• Refactored diff algorithm to be easier to follow
• Add Component.prototype.forceUpdate() method.
• Fix a bug where a child component of a high-order component self-rendering (eg: via setState()) would cause a subsequent re-render of the parent component to re-initialize itself and the child (through the recycler, but this was causing thrash).
• Fix an issue where nested components would not receive unmount lifecycle hooks (fixes Issue #47)

3.2.0

• Bugfix: pass context through recycled constructors (with this react-redux is now fully supported!)
• linkState() when used with top-level keys (ie, not dot-notated) will no longer mutate this.state in-place.

  (Nested keys can and will still mutate this.state, since the implementation of immutable state traversal would essentially be a small immutability library, not something Preact core can justify)

3.1.0

• Performance tweaks!

3.0.1

This is likely the last beta release of Preact 3.0, it'll become the stable branch shortly.
Feedback and testing welcome!

• Use a safeguard method to obtain preact attr cache objects before writes
• Fix edge case where fallthrough attribute values would not be stored in the preact attr cache
• null instead of delete for _component refs, avoiding shape mutations
• build tweaks