v0.3 (Jun 2017)

Preliminary support for x86-64 Windows hosts and targets
Support for producing native activities on 32- and 64-bit Android targets
Extended standard library (bitsets, character classification, regular expression)
Preliminary support for Kotlin/Native library format (.klib)
Preliminary source-level debugging support (stepping only, no variable inspection)
Compiler switch -entry to select entry point
Symbolic backtrace in runtime for unstripped binaries, for all supported targets

v0.2 (May 2017)

Added support for coroutines
Fixed most stdlib incompatibilities
Improved memory management performance
Cross-module inline function support
Unicode support independent from installed system locales
Interoperability improvements
- file-based filtering in definition file
- stateless lambdas could be used as C callbacks
- any Unicode string could be passed to C function
Very basic debugging support
Improve compilation and linking performance

Initial technical preview of Kotlin/Native.