Fixed

• Fixed IPv4 parsing edge case where 128.0.0.0 could be treated as invalid because it collided with the internal invalid sentinel.
• Fixed IP checks for signed Java int boundary values, including addresses in the 128.0.0.0+ range.
• Fixed webhook handling so invalid webhook URLs no longer risk breaking the async notifier worker.

Improved

• Added safer IPv4 parsing API internally.
• Improved CIDR validation coverage for /0, /16, /32, and high-range IPv4 addresses.
• Improved default config.yml readability with clearer sections, examples, and security warnings.
• Prevented binary resources such as PNG files from being Maven-filtered during builds.

Added

• Added JUnit 5 test setup.
• Added regression tests for IPv4 parsing, CIDR math, rate limiting with edge IPs, and webhook URL validation.

Security

• Documented sensitive denied-log behavior in config comments.
• Clarified PROXY_GATE, Velocity forwarding, and ALLOW_ALL failsafe risks.

Full Changelog: https://github.com/AREKKUZZERA/Better-IP-Filter/compare/1.4.0...1.4.1