Removed usage of grep -Po.
Modified code to use egrep instead of grep -o -e.
Part of dns_dynu_rm() impementation.
Implemented dns_dynu_rm() method.
In dnsapi/dns_dynu.sh line 115: export _H1="Authorization: Basic $(printf "%s" "$Dynu_ClientId:$Dynu_Secret" | _base64)" ^-- SC2155: Declare and assign separately to avoid masking return values.
Add DNS API support for Dynu.