Replace the (non-existing) `_exiterr` calls, and replace `error` & `exit` by `fatalerror`.

Fixes #25

SOA-EDIT-API behaves like SOA-EDIT-DNSUPDATE, which has different values.
DEFAULT is the default value, and will ensure serial updates.

Fixes #23

The request would not be performed when provided with more than one edit option

Fixes #24

Implement test.sh which executes tests specified in the tests folder.
The tests are currently limited to checking the parameters given to curl.

* Add parameter PDNS_SUFFIX for CNAME redirection support

- Document the PDNS_NO_NOTIFY setting to stop sending a notify.
- Only fall back to default PDNS_PORT if not set.

* Handle config coming from CONFIG_D directory

- Update the licence file to a Markdown version of the EUPL v1.2.
- Update the header with contributors and the correct information.

Allow multiple tokens for single name

Ignore unknown hooks

Avoids a few spurious API requests

* implemented support for wildcard domains in preperation for ACMEv2
rollout

Force NOTIFY after updating records

Add exit_hook configuration option

Closes #7

All configuration settings now have a PDNS_ prefix.

Closes #8

Closes #6

Various bugfixes

This permits this script to be used in a deployment where powerdns is running
to control an authoritative DNS zone which is authoritative for the
_acme-challenge record only.

The script attempts to enumerate and delete trailing dots from the DNS
zones present in PowerDNS. This patch fixes a bug where the final record
did not have its trailing dot properly removed.

The id attribute of a PowerDNS zone is not guaranteed to be equal to the
actual name which is what we actually care about. For example, if the
zone name starts with a _, it is replaced with =5F. Therefore, grab zone
names rather than zone IDs.

Closes #5

- Request the version from the API. Falls back to version 0.
- Improve JSON parsing.
- Exit on '_cert' hooks.
- Fix url order.
- Strip trailing dots from zones.
- Catch a 'Not found' response.

Documentation for subdomain support

Add support for subdomains