* Uses suppressWarnings(lm(S2~S1)) in egcm to avoid warning messages
  that are now being issued in R 3.1.  This was causing the regression
  tests to fail.
* If a pair of series is not cointegrated, displays the text
  "Not cointegrated" on the graph when plotting the series.
* Annotates the graph of the residual series with the standard
  deviation of the residuals.
Merge branch 'master' of https://github.com/matthewclegg/egcm