Resolve rate limiting errors in ping_edi()

Address HTTP 429 errors triggered by recent updates to the rate limiting
mechanism in the EDI data repository. Currently, these errors manifest
only during the execution of the test suite, specifically within the
ping_edi() function. Remain vigilant as similar issues may arise in other
parts of the codebase in the future, and be prepared to refactor all API
calls to incorporate retry mechanisms.

DESCRIPTION

@@ -7,7 +7,7 @@ Description: Work with the Ecological Community Data Design Pattern. 'ecocomDP'
     repositories, and with methods that keep the derived data up-to-date as the 
     underlying sources change. Described in O'Brien et al. (2021), 
     <doi:10.1016/j.ecoinf.2021.101374>.
-Version: 1.3.0
+Version: 1.3.1
 Authors@R: 
     c(person(given = "Colin",
              family = "Smith", 

NEWS.md

@@ -1,5 +1,9 @@
-# ecocomDP 1.3.0
+# ecocomDP 1.3.1
+
+## Fixes
+* Resolved rate limiting errors in ping_edi() triggered by recent updates to the rate limiting mechanism in the EDI data repository and due to the lack of rate limiting procedures in the ecocomDP R package.
 
+# ecocomDP 1.3.0
 
 ## Fixes
 * Fixed and cleaned up NEON data mapping functions to work with latest NEON data release, return abundance values that are finite and non-negative.

R/utilities.R

@@ -1131,7 +1131,7 @@ parse_delim <- function(x){
 # Is the EDI Data Repository accessible?
 #
 ping_edi <- function() {
-  r <- httr::GET(url = "https://pasta.lternet.edu/package/eml/edi/759") # Warn if EDI is down
+  r <- httr::RETRY("GET", url = "https://pasta.lternet.edu/package/eml/edi/759") # Warn if EDI is down
   if (httr::status_code(r) != 200) {
     stop("The EDI Repository is down for regular maintenance (Wednesday 01:00",
          " - 03:00 UTC). If you have reached this message outside maintenance",