Fixed typo in logger call.
Fixed incorrect exception handling.
Fixed bug when adding multiple selectors for single channel.

SLNetStation.appendSelectors() expects a string.
Fixed missing argument for SeedLinkException.
Fixed missing check for emtpy value.
Added regression tests for #777.
Changelog for #777
Merge pull request #777 from bmorg/fix_seedlink_bugs

Fixing multiple SeedLink bugs
some flake8 (was fixed in master by 1ca9bfee42e08af7ef57b4e8ad68dc766351bfa3 and 6939a5dc4a57ff37459b37aa954a65e7f3cf3ab5)
Strip trailing NULL bytes from INFO response.

Same as 0158148 for the releases branch.
Changelog for #778
Merge pull request #778 from bmorg/fix_seedlink_trailing_null_bytes

SeedLink: Strip trailing NULL bytes from INFO responses
Adding ORFEUS FDSNWS implementation.
reading SAC: prepending "19" in case of 2 digit year header field +
warning (see #779)
Don't create empty objects
Small fix making lots of StationXML file writeable
The attach response option will now request once per channel.

This will be much faster on average compared to the previous
solution. The previous solution requested once per station
for all time frames resulting in potentially hundreds of
downloaded responses for one trace making in unbearably
slow in some cases. This should likely be backported to the
releases branch.
Updating changelog
Compatibility for Python 2.6.
deb: fix some lintian warnings