snapshot and doc changes

Author: dsweber2

man/step_epi_slide.Rd

@@ -0,0 +1,25 @@
+# epi_slide works on weekly data with one of before/ahead set
+
+    Code
+      baked
+    Output
+      An `epi_df` object, 40 x 4 with metadata:
+      * geo_type  = state
+      * time_type = week
+      * as_of     = 1999-09-09
+      
+      # A tibble: 40 x 4
+         geo_value time_value value epi_slide__.f_value
+       * <chr>     <date>     <int>               <dbl>
+       1 ca        2022-01-01     2                 2  
+       2 ca        2022-01-08     3                 2.5
+       3 ca        2022-01-15     4                 3  
+       4 ca        2022-01-22     5                 3.5
+       5 ca        2022-01-29     6                 4.5
+       6 ca        2022-02-05     7                 5.5
+       7 ca        2022-02-12     8                 6.5
+       8 ca        2022-02-19     9                 7.5
+       9 ca        2022-02-26    10                 8.5
+      10 ca        2022-03-05    11                 9.5
+      # i 30 more rows
+