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version 0.2.0                2008-02-11              svn rev. 762
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General changes:

        * Garbage collected symbols
        * More math functions and predicates
        * length checks for circularity
        * Threading module
        * Better tail-recursion support
        * Nested car and cdr functions (cadr...)
        * Regular expression support
        * unwind-protect
        * require/provide + load with path searching
        * Unix interface module
        * Trivial format implementation
        * Ports for I/O
        * Object system with generic functions (incomplete)

C API Changes:
      
        * removed old dfsch_(make_)string() API
        * CPP macro interface to try and unwind-protect

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version 0.2.0-pre2           2006-05-17              svn rev. 360
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        * No hard dependency on readline
        * Reader is more compatible with R5RS
        * Structures (as library of macros)

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version 0.2.0-pre1           2006-02-26              svn rev. 258
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Architectural changes:
        * Real exceptions
        * union-free in-core representation of objects
        * Proper tail recursion (almost)

Datatypes:
        * New: vectors and hashtables
        * Strings can contain any data + special support for utf-8 text

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version 0.1.1                2005-05-14              svn rev. 39
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Corrected installation of header files

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version 0.1                  2005-05-14              svn rev. 37
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First release