Switch analysis to Google Trend results for the keywords "job search".

Bitcoin exchange values, while interesting, are beyond my skill level.

Things to consider in the future:
+ Automatic detection of interventions
  c.f. Tsay's _Outliers, Level Shifts, and Variance Changes in Time Series_
+ ARIMA models with change-of-variance interventions
+ X-(11|12)-ARIMA models
Change analysis to reflect new source data.

Also add a bunch of plots to get to the final 1-diff + 1-year-diff result.
Helper function.
Switch from Python to R, and put the plots somewhere.

Ugh.  Fine.  R's better at this kind of thing.