Bug in WARCRecord.__repr__()

[petri]

The line in repr:

return "<WARCRecord: type=%r record_id=%s>" % (self['type'], self['record_id'])

results in an error. I don't know if the above line is wrong or whether there's a bug in how the attribute lookup chain is supposed to work. Changing the above line to this works though:

return "<WARCRecord: type=%r record_id=%s>" % (self.header.type, self.header.record_id)

Traceback below.

---

h=WARCHeader({"WARC-Type": "response"}, defaults=True)
r = WARCRecord(h)
r
Traceback (most recent call last):
File "", line 1, in
File "init.py", line 186, in repr
return "<WARCRecord: type=%r record_id=%s>" % (self['type'], self['record_id'])
File "init.py", line 172, in getitem
return self.header[name]
File "init.py", line 40, in getitem
return self._d[name.lower()]
KeyError: 'type'

[petri]

Fix & test in koodaamo@c7b7165