Fixed string pushing error; added val type peek.
Added simple peeking to new API.
Added string peeking.
Added compound peeking api
Towards function peeking.
Example new value peeking way.
Successful removal of the Value usage in array BIF.
Towards func call evaluation refactor.
Further removing the use of the peek value and the explicit value type in general.
Ultimately removed the explicit Value type.