write mseed: raise exception when nslc code would be truncated
cake: cleanup of some plotting internals
snufflings: improved reset_gui method
improved a docstring
promote contributor
improved an exception message
cake: fixed a problem occuring with S phases and liquid layers
snuffler: fixed 'g' key command
removed some unneccesary imports
added read support for GSE1/INTV format
added new tool `jackseis` to do some common tasks with waveform archives
fomosto added 'extract' subcommand
io.save(): fixed a problem when saving to text
added read support for Guralp GCF file format
fixed a problem with trace.snuffle()
snuffler: disallow downsampling when no lowpass filter is set
fixed gcf loading with load_data=False
replaced relative with absolute imports
added some more checks to GCF file reading, tried to implement detect()

gcf.detect() does not work properly due to the very compact GCF header.
jackseis: added GCF format, --output-format option, replace by regex