* 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
* renamed test folders and fixed bug where wrong jump labels would be exectuted for rewrite.
* Added support for Osize (len(string)) and factored out the array tests
* Added current instruction number to VM prompt if program is loaded.
* added support for unary expressions.
* updated README of and sorted the help commands
* updated readme of the compiler
* bumped version -> 0.39.0
* changed vm commands to match more of the standard
* fixed Uint16 jmp bug in VM
* moved test to vm + fixed numnotequal bug
* fixed broken tests
* moved compiler tests to vm tests
* added basic for support + inc and dec stmts
* bumped version
* implemented operation and param flags in the cli invoke cmd.
* reverted prev changes and added debug flag for compiling.
* change transactionType variable to Type, for package convention
* index support for arrays.
* implemented builtin (len) for the compiler.
* bumped version -> 0.35.0
* updated compiler README and changed invoke to testinvoke.
* implemented global variables.
* refactored imports + lots and lots of other sweet stuff + fix#28.
* Implemented the VM interop runtime API (GetTrigger, CheckWitness, ...)
* implemented add, mul, div, sub assign for identifiers.
* Implemented struct field initialization.
* Implemented imports
* Implemented storage VM API (interop layer) + additional bug fixes when encountered.
* Bumped version 0.12.0
* fixed double point extension on compiled output file.
* Fixed bug where callExpr in returns where added to voidCall
* fixed binExpr compare equal
* Check the env for the gopath first
* removed travis.yml
* custom types + implemented general declarations.
* commented out the storage test to make the build pass
* refactor to use ast.Walk for recursive converting
* added lots of test cases
* added a new way to handle jump labels
* function calls with multiple arguments
* binary expression (LOR LAND)
* struct types + method receives
* cleaner opcode dumps, side by side diff for debugging test cases
