Small bugfix for blockette 60 initialization.
Closing figure instance in waveform plotting.

The destructor now closes the most recently created figure instance in
case a figure instance was created during initialization. This enables
proper garbage collection for the figure. Fixes #512.
Update obspy/datamark/core.py

Bugfix: years were not correctly defined for years [2000-2009]
Update obspy/datamark/core.py

Bugfix: completed, years are parsed correctly now
Updated link to issue #249 in obspy.signal.cross_correlation.xcorr
docstring.
Partially fixes #513.
Added offset and kurtosis code and tests
Added forgotten test for offset
Cleanup to reduce number of changed lines
Added Chassande-Mottin reference
Added full reference for kurtosis implementation
Merge pull request #516 from claudiodsf/513

Updated link to issue #249 in obspy.signal.cross_correlation.xcorr docstring.
Updated citation to run pybtex correctly
adapting citation
removing unnecessary setup.cfg
changelog and credits update
Merge pull request #517 from amaggi/am-realtime

Some new real-time functions
Update obspy/realtime/signal.py

Updated copyright notice