Merge branch 'dev' into master

acme.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env sh
 
-VER=3.1.2
+VER=3.1.3
 
 PROJECT_NAME="acme.sh"
 

dnsapi/dns_aws.sh

@@ -161,7 +161,7 @@ _get_root() {
     h=$(printf "%s" "$domain" | cut -d . -f "$i"-100 | sed 's/\./\\./g')
     _debug "Checking domain: $h"
     if [ -z "$h" ]; then
-      _error "invalid domain"
+      _err "invalid domain"
       return 1
     fi