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=== Version 0.3.3 (2011-10-24)
In memory of John McCarthy, inventor of Lisp. His work made language hacking
accessible, and this project would not exist without it.
http://en.wikipedia.org/wiki/John_McCarthy_(computer_scientist)
* Add the R6RS (fold-left) and (fold-right) procedures
* Allow continuations to be called using (apply)
* Stop re-evaluating data passed to a continuation and injected into a macro
* Split built-in library into files by data type (Fargo uses them)
=== Version 0.3.2 (2010-01-16)
* Built-in library code is executed in a protected scope so that redefinitions of
core functions in user code do not break implementations of library functions
* The core library is compiled to a Ruby representation that loads faster
* Macros correctly transcribe empty lists appearing in the input
* Macro variables may appear at greater ellipsis depth in templates than in corresponding patterns
* Fix bug in macro literal identifier recognition
* Identifier comparison is now case-insensitive
* The REPL prints quote/unquote expressions using shorthand notation
=== Version 0.3.1 (2009-08-23)
* Added the (rationalize) procedure
* Allowed (gcd) and (lcm) to take more than two arguments
* Fixed string output so the REPL prints all data types correctly
=== Version 0.3.0 (2009-07-31)
We've got all your data types now
* Vectors are supported, including the full R5RS library, macro and quasiquoting support
* Characters are available, including named characters (#\newline, #\space, #\tab)
* The full R5RS character and string libraries are implemented
* Complex numbers work correctly on Ruby1.9
* Dotted tail notation properly supported in macro templates
=== Version 0.2.1 (2009-05-19)
* Fixed a bug in (append) where '() is the last argument
* Implemented (begin) in Ruby rather than Scheme for performance reasons
* Fixed a macro bug relating to binding of macro keywords
=== Version 0.2.0 (2009-04-01)
The 'lists' release
* Entirely revised to correctly support lists as linked pairs
* Complete set of R5RS list functions
* Syntax for dotted pairs and improper lists implemented
* Rest-args for functions using dot notation
* Almost-complete R5RS numeric library, including complexes and rationals
* Some parser bugs regarding literals and quoting fixed
* Many macro parsing and expansion bugs fixed, esp. concerning nested repeating patterns
* Macro keywords and collisions with local variables now follow the spec
* R6RS ellipsis escaping feature -- (... ...) -- implemented
* All library syntax now implemented as macros, should all support call/cc
* Ruby data can now be executed as Scheme code
* Lots of inline documentation for the runtime
=== Version 0.1.0 (2009-02-25)
First public release
* Data: booleans, numbers, strings, symbols, proper lists
* Most of R5RS syntax (chapter 4)
* Quoting, quasiquoting
* Binding constructs, conditionals
* Boolean logic
* Delayed evaluation
* Macros
* Tail recursion
* Continuations
* Optional transparent lazy evaluation
* Decent chunk of R5RS numeric library
=== Version 0 (2009-01-12)
Initial draft. Supports (define), (lambda), lexical scoping,
closures, arithmetic and (display).