// To implement.

- Implement argparse.
    - -v --version
    - emit opcodes
    - maybe write a similer .pyc file for pocket
	- --docs to generate docs from cstring.

- Ignore line with '\' character.
- Implement resolve path in cli.

- Structs.
- Implement math library.
- Single header for embedding.
- Implement fiber from script body and vm run fibers (not scripts).
    Then remove vm's root script.
- C Integration api (including add core lib from host application).
- REPL.
    - compile expression for a script.
- Var handler implement.
- Make it possible to override function names.
      - To do so the functions and global variables should be in the same
        buffer as the property of the script.
- Hex, binary literals and floats like ".5".
- Function docstring property.
- Union tagging alter in var.
- (future) add structs and maybe enums.

// Add more.
[ ] Compilte core methods.
[ ] Complete var methods.
[ ] Complete core functions.
[ ] Complete builtin operators.
[ ] Complete opcodes.
[ ] Complete core libs.
[ ] Complete the docs.
[ ] More Tests.

// Bugs.
It's at pre-alpha and every thing is left to
implement, and nothing would be work as expected.