A major feature of this release an addition of text IO API. Many utilities of binary IO were refactored as generic ones and they are usable in text IO as well.
There are some smaller feature that make this release incompatible with previous one.
AsyncObjects 0.3.1 is released today. The primary feature of this release is that vats and vat runners are now different things. The vat can migrate from one runner to another (unless it is a NIOSelectorVat that is pinned to NIOSelectorRunner that has created it). This change inspired by similar feature done in E programming language implementation.
The AsyncObjects 0.3.0 has been released some time ago. They feature more or less final the component API. The next big change will be separation of Vat and Vat runner inspired by E programming language implementation (see "running-vats" branch for current changes). This will happen in the release 0.3.1.