Mar 13 2005
Gave up on fixing memory problems caused by linking with dfa.o => changed
countstr into an external program. Should write our own DFA one day.

Mar 06 2005
Added dfa.c (code found on USENET) and countstr.c -- regrettably these can't be
compiled with g++.

Jan 18 2005
Fixed the probabilistic bias for refinement.

Jan 17 2005
Lots and lots and lots of changes. Result: only two main operators are left.
The rest are made redundant.

Aug 30 2004
Added quick a few new operators. Changed a few calls to allow more flexibility
in operators.

Oct 24 2003
Codes now compile with g++ as well as gcc. (g++ is kinda fussy with casting.)
I want to keep it this way so that people who works on it in the future can
choose either languages to work with.

Oct 16 2003
Feature equivalence with what was described in Kasai's paper.

