Final changes before V3.0.0 release
* Remove old Gandi. Fixes#575
* Many cleanups
* go mod tidy && go mod vendor
* integration_test.go: Output subtest name
* Cleanups
* integration_test.go: Description should include sub-test name
* Add a whitespace test to js/parse_tests/017-txt.js
* Cloudflare strips whitespace from end of TXT
* Fixes https://github.com/StackExchange/dnscontrol/issues/700
* Whitespace at end of TXT records
Name.com strips the whitespace from the end of a TXT record. There's
nothing we can do other than file a bug.
* Fixes https://github.com/StackExchange/dnscontrol/issues/701
