Versioning
Inferno versioning changes to follow semantic versioning system. This means any kind of breaking change will ship with major version increase. http://semver.org/
babel-plugin-inferno https://github.com/infernojs/babel-plugin-inferno will now be in same major version range with Inferno packages.
Core
Minor performance improvements
Synthetic events now have currentTarget property in event parameter again :)
Typescript
Inferno now compiles with strictNullChecks on
Added more type information to public APIs
ES6 Component
Minor performance improvements
componentDidUpdate now sends lastState correctly
Router
Allows to use Route without component prop #998
Fixes percentage encoded url values #1002
Multiple bug fixes:
https://github.com/infernojs/inferno/issues?q=is%3Aissue+label%3A%22Fixed+3.0.0%22+is%3Aclosed