* Handle IPv4 "Classless in-addr.arpa delegation" RFC2317 (partial).
* Validate PTR name when in RFC2317 "Classless in-addr.arpa delegation" domains.
* Update docs
* Set CanUsePTR for Route53 and Google CloudDNS.
* BIND: Replace "/" with "_" in filenames.
* WIP
* Enable PTR records in dnsconfig.js, in BIND provider.
* Rename REVERSE() to REV().
* More accurate PTR target checking
* Document REV()
* Fix broken test
* intitial work for bind refactor
* relax requirement that creds.json exists.
* Updating bind docs.
Fixes#48
* typo
* can exclude provider from default set in creds.json
* Add bind to integration tests. Fix for IDNs.
* initial refactoring of diffing
* making cloudflare and others compile
* gandi and gcloud. no idea if gandi works anymore.
* r53
* namedotcom wasn't working.
* go changes to support nameservers_from
* clear nameservers before giving to dsp.
* work
* work
* nameserver updates.
* remove unused
* name.com stinks at NS records.
* whitespace
* removing web(belongs in own repo). First sketch of DSP vs NAMESERVER_FROM
* add DEFAULTS to replace defaultDsps.
* initial gcloud provider. Simple records work.
* namedotcom can do subdomain ns records now.
* fix for mx and txt
* kill dsp acronym
