October 7, 2019 v0.6.1
  (1) fixed a few bugs in R CMD check clues
October 6, 2019 v0.6.0
 (1) fixed a few bugs in C code and Fortran code: format mismatches
 (2) change maintainer's email to weiliang.qiu@gmail.com
October 13, 2016 v0.5.9
  (1) add "import(graphics)" to NAMESPACE and add "graphics" to DEPENDENCE
  (2) fix a bug: 0.0 should be 0.0D0 in function 'clustering'
  ("Using gfortran with options -Wall -pedantic to compile your package
Fortran code finds important problems, see your package check pages for
more information." - Kurt Hornik <Kurt.Hornik@wu.ac.at> (Aug 28, 2016))

August 29, 2016 v0.5.7
  use new format for DESCRIPTION file

July 24, 2015 v0.5.6
  fixed a bug in R function 'plot.clues': should not add "+1"
Feb. 12, 2015 v0.5.5
fixed a bug: could not set 'K2.vec = n0' in the input when we define a function
