Index not change when shifting the 5-day window

[gnahcihs]

Hi! I found that the generated data was self-repeated, and did not contain the data in previous dates. It could be a mistake in the data generating function:

nih-community/utils.py

Line 118 in 2446a1e

out = pd.DataFrame(np.column_stack([_add_shifts(dat[:,:-1], 1, n_cols) for i in range(shifts)]),

Here, the _add_shifts(dat[:,:-1], 1, n_cols) should be _add_shifts(dat[:,:-1], i, n_cols) to get shifted rows.