* added runtime serialize and deserialize functions
* removed getCurrentBlock from runtime functions
* Added block and header stdlib interop functions
* added transaction interop api
* added asset interop api
* bumped version
* Added missing storage.Find storage API function
* Fixed wrong example in the compiler README
* updated the compiler README to be more accurate on compiler features
* support VM to pass method and arguments to a script.
* added support for type assertions in smartcontracts.
* added native vm support for print.
* moved VM API packages to vm -> API
* reverted the native Print opcode in favor of runtime.Log
* added support for registering custom interop hooks in the VM.
* Updated README
* Updated compiler with @OPTIMIZE tags
* Moved more tests to VM package.
* optimized and refactored compiler and vm API
* updated README with new smartcontract apis
* bumped version
