v0.7.3 — Test Tooling Improvements

• Portable PHPUnit bootstrap to resolve autoloading both in-repo and from consumer projects.
• PHPUnit config updated to use the new bootstrap and exclude integration/hardware-wallet groups by default.
• Integration network setup script now uses the portable bootstrap and provides sane env fallbacks.

Details

• Add tests/bootstrap.php to locate vendor/autoload.php in multiple contexts.
• Update tests/phpunit.xml.dist with bootstrap="bootstrap.php" and default excluded groups.
• Update tests/setup-integration-network.php to require the portable bootstrap and default:
  • STELLAR_HORIZON_BASE_URL → http://localhost:8000/
  • STELLAR_NETWORK_PASSPHRASE → Integration Test Network ; zulucrypto

Impact

• No runtime or API changes; package behavior is unchanged.
• Developer experience: tests run more smoothly both inside this repo and when invoked from a consumer project’s vendor/
  bin/phpunit.