Fix autoplot.epi_archive on archives with a v column

DESCRIPTION

@@ -1,7 +1,7 @@
 Type: Package
 Package: epiprocess
 Title: Tools for basic signal processing in epidemiology
-Version: 0.12.0
+Version: 0.12.0.9999
 Authors@R: c(
     person("Jacob", "Bien", role = "ctb"),
     person("Logan", "Brooks", , "[email protected]", role = c("aut", "cre")),

NEWS.md

@@ -1,6 +1,13 @@
 # epiprocess
 
-Pre-1.0.0 numbering scheme: 0.x will indicate releases, while 0.x.y will indicate PR's.
+Pre-1.0.0 numbering scheme: 0.x will indicate releases, while 0.x.0.9999 will
+indicate development versions beyond 0.x.
+
+# epiprocess 0.12.0.9999
+
+## Bug fixes
+- `autoplot.epi_archive` now works properly on archives that contain a column
+  named `v` (#674, thanks to @pcollender for the report).
 
 # epiprocess 0.12
 

R/autoplot.R

@@ -311,7 +311,7 @@ autoplot.epi_archive <- function(object, ...,
   snapshots <- purrr::map(
     .versions,
     function(v) {
-      dplyr::mutate(epix_as_of(object, v), version = v)
+      dplyr::mutate(epix_as_of(object, v), version = .env$v)
     }
   ) %>%
     purrr::list_rbind() %>%