CovTools 0.5.4

• Corrected CRAN errors.

CovTools 0.5.3

• Fix an error in CovEst.2010OAS.

CovTools 0.5.2

• Function list is moved to README file.
• Following functions are added - CovEst.2003LW, CovEst.2010OAS, CovEst.2010RBLW.

CovTools 0.5.1

• Functions for hypothesis tests are separated for clarity.
• Initialize the following documentation:
  • NEWS for keeping record of updates.
  • README to briefly introduce the method.