Version matrix

Brain****
C++11
C++14
C++17
C
Dart
Fortran
Go
Haskell
Java 8
Java 11
JAVA15
JavaScript
KOTLIN
Lisp
NASM64
PERL
PHP 7
Prolog
PyPy 2
PyPy 3
Python 2
Python 3
Racket
Ruby 2
Rust