In the following, `x' shows fixes of bugs,  and `o'  shows additions  or
changes of features.

Ver.3.08 -> Ver.3.09
********************

x  Build fails because some names conflict with identifiers  in standard
   libraries.

Ver.3.07 -> Ver.3.08
********************

o  New procedure `set-root-directory!' to restrict accessible file names.

x  After failure of opening a file, gc may fall into infinite loop.

Ver.3.06 -> Ver.3.07
********************

x  It causes SIGSEGV that you invoke the procedure `gensym' with  a non-
   string argument,

o  When a string is  passed to  the procedure  `gensym', it  becomes the
   default prefix string for next call of `gensym'.

Ver.3.05 -> Ver.3.06
********************

x  If one of arguments to `modulo' is an  inexact number,  the procedure
   returns the 1st argument.

x  In case that the executable file  resides in  a very  deep directory,
   install fails.