- fixed gshhs broken link
  - did not update to gshhg 2.2.2 yet
- noise_psdgram is cleaned up and ready
- plotpsdgram cleaned up to work with output
  from noise_psdgram a little better
- installer now renames seizmo top level directory
  to seizmo so that commands like 'help seizmo' work
- updated README to reflect github changes
- touches to ROADMAP compat & todo with progress
- slowdecay* now allows directory input for ease
  of use
- updated most mapping functions to make better
  use of the mmap image option
- updated mmap to be more flexible with image inputs
- fixed bugs in useralign & plot_taupcurve_dt as
  pointed out by Cheng (thanks!)
- added gcdn for getting the greatest common
  denominator for 3+ numbers
- slidingavg (and friends) now handles nans
- getpeaks/correlate fixed to handle cases of
  no peaks (but actually now the edges are
  returned so that fixed the same problem)
- added doc improvements to noise_setup with
  focus on the pzdb option
- improved/bugfixed noise_rms_calc/process so
  that data rejection in step 7 is useful
- added example buoy data for read_ndbc_swden
- read_ndbc_swden reads in multiple files now
- plotpsdgram can plot multiple psds
- freqwindow_auto added so Ghassan could blast
  through data for an AGU abstract
- fixed a bug in makekernels example (thanks Ghassan!)
- fixed bug in ttsolve for negative correlation
  values to force weights to be positive