utils.nat_sorted: sort list with smart handling of ints
triggers.py: fixed bug in column setting
data.py: removed 1 and added 1 HACK for frame type

    - LLO R/T/M frame types renamed on Dec 06 2013
data.get_timeseries: add multiprocessing
data.get_timeseries: fix bug in reading trends

    - need to remove frames from cache who's segment overlaps with the
      requested time by lest than one trend sample
    - lalframe segfaults otherwise
tabs.core: added multiprocessing support

    - for now all trigger-related features are forcibly single-processed
    - other than that, frame reading and plotting are spread out
tabs.core: fix ZeroDivisionError
tabs.core: allow multi-line channel definitions in INI
plot.core: fix bug in mmm_channels

    - don't sort, otherwise labelling breaks
builtin_plots: centralised adding state segments
builtin_plots: fix bug for empty time-series list
builtin_plots: force auto_gps_scale
builtin_plots: fixed bug in segment y-axis
builtin_plots: fixed two bugs in trigger plotting
gw_summary: added --single-process switch
gw_summary: allow multi-line channels options
gw_summary: use nat_sorted to load bitmask in correct order