update node version to v10.13

usr/share/install_helper.sh

@@ -133,8 +133,11 @@ my_tmp="$(mktemp -d -t telebit.XXXXXXXX)"
 #TELEBIT_TMP="$my_tmp/telebit"
 
 echo "Installing $my_name to '$TELEBIT_REAL_PATH'"
-# v10.2+ has much needed networking fixes, but breaks ursa. v9.x has severe networking bugs. v8.x has working ursa, but requires tls workarounds"
-NODEJS_VER="${NODEJS_VER:-v10.6}"
+# v10.2+ has much needed networking fixes, but breaks ursa.
+# v9.x has severe networking bugs.
+# v8.x has working ursa, but requires tls workarounds"
+# v10.13 seems to work for me locally (new greenlock)
+NODEJS_VER="${NODEJS_VER:-v10.13}"
 export NODEJS_VER
 export NODE_PATH="$TELEBIT_TMP/lib/node_modules"
 export NPM_CONFIG_PREFIX="$TELEBIT_TMP"