 the FFI stuff described above
  <li>debug.scm provides various debugging aids such as trace, break, and watch
  <li>json.scm is a JSON reader/writer, but I got side-tracked
  <li>lint.scm is the s7 equivalent of the ancient C program named lint (modern equivalent: cppcheck)
  <li>loop.scm is Rick Taube's CL loop macro
  <li>mockery.scm has mock data libraries (openlets masquerading as various data types)
  <li>profile.scm is a profiler
  <li>r7rs.scm implements some of r7rs-small
  <li>reactive.scm impleme