Fierce

Added
- Official Python 3.9 support
- Official Python 3.10 support

Changed
- Improved various error handling

Removed
- Official Python 3.5 support

Added
- Official Python 3.8 support
- The --tcp flag to use TCP instead of UDP DNS queries

Removed
- Official Python 3.4 support, it's EOL

Changed
- Print out all A records for wildcard, not just first one

Added
- Filter out subdomains with an A record matching a wildcard A record
- Official Python 3.7 support

Fixed
- Prevent out of bounds error when expanding IPs near 0.0.0.0 or 255.255.255.255

Changed
- Python 3 is now a requirement when installing via setup.py (including pip)
- The README markdown is now included in the package's long description

Changed
- Nearby IP reverse queries are now multithread, which improves performance significantly
- Updated development dependencies
- Subdomain lists use package_data instead of data_files

Added
- Gracefully handle users exiting the script with Ctrl+C
- Gracefully handle incorrect file or IP range arguments

Removed
- Official Python 3.3 support, it's EOL

Added
- Official Python 3.6 support

Fixed
- Handling of subdomains specified that are actually FQDNs
- Gracefully handling timeouts when querying nameservers
- Gracefully handling timeouts when querying zone transfers