* wip
* move print and JSON functions to modules
* builtin functions are not replacable now
* builtin functions are added for default nil symbol table
* importables: builtin modules and source modules
* refactoring runtime tests
* fix tests
* update documentation
* cleanup
* clean up cli
* fix REPL prints
- add object.NumObjects()
- add object allocation limit in VM
- delete objects.Break, objects.Continue, objects.ReturnValue
- add Script.SetMaxAllocs()
- update sandbox documentation
- add some tests
- remove duplicate values in compiled constants (fixes#96)
- option to limit the maximum number of objects in compiled bytecode constants
* Decoupled stdlib from script
* Decoupled compiler and vm from stdlib
* cleanup
* Docs and cleanup
* main package with and without stdlib
* cleanup
* Update .goreleaser