Add basic evaluation and builtin functions.
Add garbage collection.
Add read/eval/print functions.
Add Makefile.
Add tail call optimization.
Add README.
Read program from a source file.

Add repl test program.
Fix parsing of strings.
Add a couple more examples.
Add better comparisons.
Pin context while invoking deferred calls.

Also add debug code for diagnosing GC issues.
Add (begin...) and <, > operators.
Add processing for (let...) keyword.
Add standard library that is read on startup.
Support Scheme-style function declaration.

(define (funcname x y) ...) is much cleaner than having to use
lambdas.
Add some more standard library functions.
Add dot syntax parsing and varargs support.
Add more library functions, improve varargs.
Add copyright notices, tiny bit more documentation.
Move example files to subdirectory.