Log message:
Update to 3.15.2

ChangeLog:
v3.15.2
Bug fixes:
- The `(husk random)` library's `randint` function no longer throws a
runtime error when called.
- The `newline` function now accepts a port as an optional second argument,
instead of throwing an error.

Log message:
Update to 3.15.1

changelog:
v3.15.1

This is a small bug fix release:

- Preserve macro hygiene when using code that contains explicit renaming
macros contained within syntax-rules macros. Previously, the syntax-rules
system would not pass renamed variables across to the ER system. So an
identifier could be renamed by syntax-rules but the ER macro would then
have no knowledge of the rename and would be unable to use `rename` to make
the identifier hygienic. For example, the code:

        (let ((unquote 'foo)) `(,'bar))

 Should evaluate to `((unquote (quote bar)))`.

- Added support for multi-line input to `huski`.
- Fixed GHC compiler warnings when building with `-Wall`.

Log message:
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.