TODO:
o reduce/remove/rewrite for smaller code base
  * lr.c: combine update functions
  * spardat.c: reduce ivec/dyv/dym calls
  * ivec.c, amdyv.c: make simpler static classes
  * ...
o consider alternate sparse vector formats, maybe Judy trees
o consider using abdat, once they are finished and if I can get permission.

CHANGES:
2005-07-19:
o RELEASE
o Fixed wrong dates in CHANGELOG.
o Tried to fix zlib problems under cygwin, but gave up.  However,
  I will keep the file-pointer-ref-and-cast macros for pfiles.
o Removed zlib from mingw build type.
o Fixed UZLIB typo in Makefile.conf.
o Increased line-size limit in am_string:mk_string_from_line().

CHANGES:
2005-07-09:
o RELEASE

2005-07-08:
o Added zlib support everywhere.
o Fixed some small errors in the documentation, added short notes about zlib.

2005-07-07:
o Fixed bug in mk_lr_train() where return code from lr_train_iterate()
  was improperly ignored.


CHANGES:
2005-06-13:
o RELEASE
o Changed dense dataset load to reduce memory overhead.
o Changed lr_train stuff for dense datasets to reduce memory overhead.
  No dataset copies are made for training and predicting on dense data.
  k-fold cross-validation makes only one copy now.  Empirical memory
  usage during dense train is only slightly higher than dataset size
  times sizeof(double).  Dense k-fold is twice this.

2005-06-09:
o RELEASE
o Fixed a few build system bugs
o Changes to build system to accomodate Windows, cygwin and mingw

2005-05-24:
o RELEASE
o Added kfold executable
o Update docs
o Fixed cgeps description in docs
o Add valgrind target to testing makefile
o Set cgdeveps (+cgbinit, implicitly) as default cg termination method
o Fixed unitialized variable problem with cgbinit
o Removed several memory leaks (all known memleaks, using valgrind)
o Adjusted lots of verbosity-related stuff
o Added ROC-curve writing to predict program
o Thankfully, the algorithm times on ds1 are the same as those we have
  reported elsewhere -- at least we have not (yet) really screwed things up

2005-05-23:
o Big changes to build system

2005-05-22:
o RELEASE
o Initial release
