Import husk-scheme-3.15 as wip/hs-husk-scheme.

Husk is a dialect of Scheme written in Haskell that implements a superset of
the R5RS standard. Advanced features are provided including:

 * First-class continuations of unlimited extent
 * Hygienic macros based on syntax-rules
 * Low-level explicit renaming macros
 * Library syntax from the R7RS standard
 * A foreign function interface (FFI) to Haskell
 * Full numeric tower providing support for real, rational, and complex numbers
 * Proper tail recursion and lexical scoping
 * Read-Eval-Print-Loop (REPL) interpreter, with input driven by Haskeline
   to provide a rich user experience
 * Standard library of Scheme functions, and support for many popular SRFI's

Husk may be used as either a stand-alone interpreter or as an extension language
within a larger Haskell application. By closely following the R5RS standard,
the intent is to develop a Scheme that is as compatible as possible with
other R5RS Schemes. Husk is mature enough for use in production, however
it is not optimized for performance-critical applications.

For documentation and examples,
see http://justinethier.github.io/husk-scheme/documentation.html.
For detailed information on each release,
see http://justinethier.github.io/husk-scheme/news.html.
+ hs-husk-scheme