Fix flusight hub formatter

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: epipredict
 Title: Basic epidemiology forecasting methods
-Version: 0.2.0
+Version: 0.2.1
 Authors@R: c(
     person("Daniel J.", "McDonald", , "daniel@stat.ubc.ca", role = c("aut", "cre")),
     person("Ryan", "Tibshirani", , "ryantibs@cmu.edu", role = "aut"),

NEWS.md

@@ -2,6 +2,10 @@
 
 Pre-1.0.0 numbering scheme: 0.x will indicate releases, while 0.0.x will indicate PR's.
 
+# epipredict 0.2.1
+
+- Fix bug in `flusight_hub_formatter()` so that it works as expected even if the user has not first loaded the `epidatasets` package.
+
 # epipredict 0.2
 
 ## Breaking changes

R/flusight_hub_formatter.R

@@ -1,6 +1,6 @@
 location_to_abbr <- function(location) {
   dictionary <-
-    state_census %>%
+    epidatasets::state_census %>%
     dplyr::transmute(
       location = dplyr::case_match(fips, "00" ~ "US", .default = fips),
       abbr
@@ -10,7 +10,7 @@ location_to_abbr <- function(location) {
 
 abbr_to_location <- function(abbr) {
   dictionary <-
-    state_census %>%
+    epidatasets::state_census %>%
     dplyr::transmute(
       location = dplyr::case_match(fips, "00" ~ "US", .default = fips),
       abbr