CRAN v0.2.2

Minor release for compatibility with an upcoming ggplot2 release. This release
contains a few bug fixes and improvements to existing functionality.

Improvements

• The gg_tsresiduals() function now allows the type of plotted residual to be
  controlled via the type argument.
• Improved the default seasonal window for STL() decompositions. For data with
  a single seasonal pattern, the window has changed from 13 to 11. This change
  is based on results from simulation experiments.
• Documentation improvements.

Bug fixes

• Fixed issue where seasonal::seas() defaults were not being used in
  X_13ARIMA_SEATS() when defaults = "seasonal" (#130).
• Fixed issue with gg_subseries() on data with spaces in the index column
  name (#136).

Breaking changes

• Replaced usage of ... in ACF(), PACF(), and CCF() with y (and x
  for CCF()) arguments. This change should not affect the code for most users,
  but is important for the eventual passing of ... to acf(), pacf() and
  ccf() in a future version (#124).