Save the temporary file in case something went wrong
Merge branch 'master' of github.com:bortzmeyer/seenthis-python

Conflicts:
	seenthis-post.py
Implementation of the new service of SeenThis: finding is an URL is already reported in a seen
Implementation of the retrieval of one seen (one message), by giving its message-ID
Forgotten script in commit 678025db4b
* Serious bug when appending oldest entries fixed
* Workaround the SGML DOCTYPE parsing of FeedParser
<author> element was forgotten in the serialization
Other retrieving API (see issue #2)
Set explicitely the output encoding
Debugging instruction forgotten