Merge commit 'godog/master' into merge

Merge commit 'godog/master' into merge

* commit 'godog/master':
  drop email.Parser import
  move to tools/
  use different pubDate if going in or out
  use python-debian for .changes parsing
  again, trailing whitespaces removed
  catch and output file write errors
  print help on non-existant dirs
  insert new items on top of feeds and purge them from the bottom
  add datadir option
  trailing whitespaces corrected
  first import

Signed-off-by: Joerg Jaspert <joerg@debian.org>