ccData: check attribute types upon setting (resolves #63) (cherry picked from commit 7053d776b8e7fb6718c4897ac2b36327fe1f0a2e)
ccData: check attribute types upon setting (resolves #63)
(cherry picked from commit 7053d776b8e7fb6718c4897ac2b36327fe1f0a2e)

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