change print statements to be PY3K-friendly for when code is used pre-2to3ing; Erik, feel free to edit/change/back-out this commit if/when you find better ways

git-svn-id: https://svn.stsci.edu/svn/ssb/stsci_python/d2to1/trunk@26498 fe389314-cf27-0410-b35b-8c050e845b92
Added sontag to the authors file since he made an SVN commit

git-svn-id: https://svn.stsci.edu/svn/ssb/stsci_python/d2to1/trunk@26503 fe389314-cf27-0410-b35b-8c050e845b92
Use the print_ function from six instead of just using parens with a print statement

git-svn-id: https://svn.stsci.edu/svn/ssb/stsci_python/d2to1/trunk@26504 fe389314-cf27-0410-b35b-8c050e845b92
Ensure that this is an actual list, and not just a dict_items view as one might get on Python 3

git-svn-id: https://svn.stsci.edu/svn/ssb/stsci_python/d2to1/trunk@26505 fe389314-cf27-0410-b35b-8c050e845b92
Add changelog entry for the recent Python 3 fixes

git-svn-id: https://svn.stsci.edu/svn/ssb/stsci_python/d2to1/trunk@26506 fe389314-cf27-0410-b35b-8c050e845b92