docs: document

Author: dshemetov

NAMESPACE

@@ -48,7 +48,6 @@ export(pvt_twitter)
 export(set_cache)
 import(cachem)
 import(glue)
-import(openssl)
 importFrom(MMWRweek,MMWRweek2Date)
 importFrom(checkmate,assert)
 importFrom(checkmate,assert_character)
@@ -74,6 +73,7 @@ importFrom(httr,modify_url)
 importFrom(httr,stop_for_status)
 importFrom(jsonlite,fromJSON)
 importFrom(magrittr,"%>%")
+importFrom(openssl,md5)
 importFrom(purrr,map_chr)
 importFrom(purrr,map_lgl)
 importFrom(readr,read_csv)