iltin support for threads, networking, and an event loop</li>
    <li>First class closures</li>
    <li>Garbage collection</li>
    <li>First class green threads (continuations)</li>
    <li>Mutable and immutable arrays (array/tuple)</li>
    <li>Mutable and immutable hashtables (table/struct)</li>
    <li>Mutable and immutable strings (buffer/string)</li>
    <li>Macros</li>
    <li>Tail call optimization</li>
    <li>Direct interop with C via abstract types and C functions</li>
    <li>Dynamically load C 