added failing test for a line folding issue
added failing test for an attach property parsing issue
Merge pull request #63 from DominikTo/linefolding-issue

added failing test for a line folding issue
Merge pull request #62 from DominikTo/attach-parsing-issue

added failing test for an attach property parsing issue
Parsing empty parameters.

Also fixed this unittest a bit, because it's value didn't make any
sense.
Fixed Issue 62.
Tweaked test to come out correctly.
Ignoring vim swap files
removed pointless debug code.
added failing quoted printable linefolding test