healthyR.ts 0.3.2

Minor Fixes and Improvements

None

New Features

1. Add function ts_random_walk_plot() - Creates a side-by-side faceted plot
   for random walk simulations showing both the random variable and the random walk
   path (cumulative product).

Breaking Changes

1. Require R >= 4.1 per CRAN request due to using the native pipe.
2. Fix #542 - Refactor ts_ma_plot() to use ggplot2::facet_wrap() instead of
   cowplot::plot_grid() for stacking plots. The function now returns only ggplot2
   output and no longer includes xts plotting functionality. The return value has been
   simplified from 6 items to 2 items: pgrid (ggplot2 facet_wrap plot object) and
   data_summary_tbl (summary data table). Removed return values: data_trans_xts,
   data_diff_xts_a, data_diff_xts_b, and xts_plt.

Minor Fixes and Improvements

None

New Features

None