Bump to v4.3.0

Update CHANGELOG-4.x.md

Merge pull request #112 from Badcow/v4.2

Update CHANGELOG-4.x.md

Issue 96 (#98)

.

Issue 91 (#94)

* [Issue #91](#91) - Use `christian-riesen/base32` instead of `ademarre/binary-to-text-php`.

Updated CHANGELOG

Updated README.

Correct replacement name validation in `NAPTR` Rdata.

Fix issue with orphan comments.

Merge branch 'master' of github.com:Badcow/DNS