NetDNS2 - PHP DNS Resolver and Updater
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v2.0.7
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* changed the hashing algorithm used for cache storage from sha256 -> xxh128; the xxHash algorithms are faster
* bugfix: fixed #177 - the "NULL" resource record has an issue because the name conflicts with the PHP reserved word "null", so I
  had originally named it "NUL" instead, but apparently this causes a problem for NTFS in Windows. I've changed it now to be
  "RR_NULL", which is dumb looking, but shouldn't conflict with anything. It can still be created in the way using "NULL", just the
  class name is named inconsistently.
* bugfix: fixed #178 - I was trimming periods from names in the new Data class- which is correct for Domains and Mailboxes, but
  not Text objects, as it can break when you have a domain that happens to line up just right. This fix only trims() the period
  when it's a Domain or Mailbox class.

v2.0.6
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* bugfix: fixed #173 - the Client.php was comparing the $rr->type value to "SOA" but should have been using the new ENUM value. 
* changed from mt_rand() to random_int(); provides the same value, but faster and produces less complaints from code scanners about
  weak RNG, even though it doesn't actually matter since this isn't used for cryptography.
* realpath() the resolv.conf and private key file path just-in-case; this isn't a real problem.
* changed the resolver cache to use sha256 instead of md5(); again, this isn't cryptographic, so it doesn't matter, but in my testing
  the sha256 function is surprisingly slightly faster than md5(), and it kills the complaints from code scanners.
* dropped the use of curl_close(); it's deprecated as of PHP 8.5.
* cleaned up the BitMap::arrayToBitMap() function, and created a phpunit test to confirm it's working.
* changed any isset() cases to use === to avoid "loose comparison" warnings.

v2.0.5
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* bugfix: fixed #169 - the Client.php was comparing the $qtype value to "AXFR" but should have been using the new ENUM value
* bugfix: fixed #170 - the Socket::read() function could end up in and endless loop when using TCP, and the remote end doesn't
  return any data at all.
* bugfix: fixed #171 - added a missing __isset() magic method to the RR object.

v2.0.4
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* bugfix: fixed the phpdoc for the $_options passed to the Resolver, Notifier, & Updater constructors; the array format was incorrect.
* bugfix: fixed the blocking logic in Socket::read(); there were a couple reports of failures here that could only happen in a specific 
  case where only one initial byte of data is returned on TCP connections.
* bugfix: fixed #167 - the Mailbox object (used on SOA, RP) RR's didn't support a value without a "." in it (aka an @). While according 
  to RFC1035, this value should be an email address, it seems like DNS servers don't enforce this, so you can add a single value in 
  like "root" and it's accepted.
* bugfix: fixed #168 - the SHA1 DNSSEC Digest algorithm was configured as id 0, but should be 1.

v2.0.3
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* bugfix: fixed #162; the type() was missing when creating a Data\Mailbox type in RR::__set().
* changed the default $_offset value for Data types to -1 instead of null; it achieves the same goal (an "unset state"), but resolves a 
  few PHPstan complaints.

v2.0.2
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* Added support for Internationalized Domain Names (IDN)
* bugfix: fixed #160 - the Updater() and Notifier() class constructors were accidentially changed to require a response value; this was 
  changed back to default to null.
- bugfix: fixed #161 - there was a domain encoding issue related to TSIG signatures, when using key names or algorithms with periods in 
  them. This was part of a larger encoding logic issue.

v2.0.1
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* bugfix: \NetDNS2\RR\PTR::ptrdname was set to private instead of protected #157
* bugfix: the IPv4 & IPv6 data objects were missing from the \NetDNS2\RR::set() function.
* bugfix: the Text data object was being referenced incorrectly with a lead \ in \NetDNS2\RR::set().

v2.0.0
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IMPORTANT: this release is not backwards compatible with v1.x - see the README for more details on upgrading.

* Minimum PHP version was increased to 8.1; this version uses strong typing, ENUMs, and other modern PHP features.
* Complete code re-factor, converting to PSR-4 style autoloading, and namespace semantics.
* Added support for DNS over TLS (DoT).
* Added support for DNS over HTTPS (DoH).
* Added support for (almost) all EDNS(0) features (client subnet, cookies, TCP keepalives, etc.)
* Added Memcache & Redis support in the local cache object.
* Added the HTTPS, SVCB, DSYNC, and other resource records.