2012.01.16, Version 0.7.0 (unstable)

* Upgrade V8 to 3.8.6

* Use GYP build system on unix (Ben Noordhuis)

* Experimenetal isolates support (Ben Noordhuis)

* Improvements to Cluster API (Andreas Madsen)

* Use isolates for internal debugger (Fedor Indutny)

* Bug fixes
