2011-09-20 (as 0.0-4)
	* document fsnot function.
	* remove fs_tt (no longer needed)

2011-06-17
	* sort method for fs_fstruthTable

2011-05-27
	* minor bugfix.

2011-01-01
	* new function of fsplot.

2010-12-04
	* add example of intermediate solution, extractor of prime implications

2010-12-02
	* new function of indirectCalibration.

2010-11-21
	* add functions for tsQCA (and related dataset)

2010-11-13
	* new data set of Hino2009

2010-05-28
	* check the reserved keywords when construct a truthTable

2010-05-24
	* improve coverage.rd.

2010-05-21 (released as 0.0-3 rev 108)
	* plot.QCA
	* add tests
	* exported findNoCSA

2010-05-15
	* move functions of truthTable to a seperate file truthTable.R
	* experimental function  solveBigPIChart (not exported).
	* revised findNoCSA since -9 is the dontcare value now.

2010-05-14
	* experimental function of combnBySplit (not exported).
	* new data set GiugniYamasaki2009
	* improvement of various Rd files.

2010-05-13
	* revised call element in excludeCSA and constrReduce.
	* Improve doc of excludeCSA

2010-05-10
	* minor bugfix of reduce and CSA, new function of excludeCSA.

2010-05-08
	* minor bugfix of coverage.QCA

2010-05-07
	* coverage method for QCA object
	* improve and document coverage.QCA

2010-05-03
	* update SA.rd.

2010-04-30
	* add new dataset Yamasaki2009.
	* minor bugfix of summary.QCA.

2010-04-28
	* update method for QCA is exported.
	* minor bugfix of reduce.truthTable.

2010-04-27
	* bugfix of reduce2 (configurations can be used more than one time to yield simpler solution).
	* dontcare case is denoted by value of -9 now.
	* add data of CarenPanofsky, and example of TQCA.
	* argument complete is defunct (in cs_truthTable and fs_truthTable)
	* new function of mv_truthTable (based on cs_truthTable).
	* reduce function has been tidied with change of argument.
	* change track can be found in rev 92.

2010-04-26
	* unexport several functions.
	* revert solvePIChart's method argument to previous one (so gtools is not required).
	* improvement of reduce.Rd and minor bugfix of CoD.rd and suffnec.Rd.
	* to make it pass R CMD check.

2010-03-23
	* forumla method of reduce.

2010-03-18
	* cs_truthTable return a component of call.
	* drop1 method for truthTable for exploration of conditions.
	* improvement of suffnec.Rd.

2010-03-18
	* minor bugfix of constrReduce: update component of primeImplicants in the returned object.

2010-03-17
	* update examples section in CoD.Rd.

2009-12-29
	* update CoD data set.

2009-11-04
	* add doc of coverage.

2009-10-20
	* change "neccessary condition" to "common configuration" to avoid confusion (Thanks Carsten Schneider).
	* export simplifyingAssumption.

2009-10-16
	* improve doc of cs_truthTable
	* eliminate missing data automatically in cs_truthTable and fs_truthTable.
	* when nlevels is mismatched, throw a warning and use possible value instead of stop.

2009-10-13
	* new function of bestSubsets(), changed to findNoCSA().
	* change version number to 0.1-3 (0.1-2 is a bugfix version for R-2.10-0).

2009-10-09
	* use gtools:::combinations instead of combn in solvePIChart can speed it up by 15%.
	* use esubSet in reduce.default, and rename original reduce.default to reduceOld for calibration purpose.
	* minor change of esubSet to handle implicant without NAs.
	* new function necessaryIndex.

2009-10-08
	* fix bugs of esubSet(): correctly handle MV. need more tests.

2009-10-07
	* reduce.default(): set dim to NULL rather than use as.vector to speed it up.
	* new function esubSet(), intended to superpose subSet(). It is much faster, but need more tests (seems ok for all 2-levels).

2009-10-06
	* new function of consistency and coverage and overlap.

2009-10-06
	* improve superSet, faster when implicant has NAs.

2009-10-01
	* fix bugs in *.Rd files.

2009-01-17
	* check value of nlevels argument in cs_truthTable and reduce.default

2009-01-16
	* reduce is generic function now.
