Update the CHANGELOG.
Update the CHANGELOG.

berquist/cclib,gaursagar/cclib,ben-albrecht/cclib,andersx/cclib,ghutchis/cclib,langner/cclib,cclib/cclib,ATenderholt/cclib,berquist/cclib,jchodera/cclib,berquist/cclib,Schamnad/cclib,langner/cclib,andersx/cclib,gaursagar/cclib,langner/cclib,ben-albrecht/cclib,ATenderholt/cclib,cclib/cclib,Clyde-fare/cclib,cclib/cclib,jchodera/cclib,Clyde-fare/cclib,ghutchis/cclib,Schamnad/cclib