fast_base64_encode      Base64 encoding and decoding
fast_format_datetime    Format dates and timestamps as RFC 3339
fast_format_double      Format doubles with the shortest round-trip
                        digits
fast_hash               XXH3 hashes
fast_hex_encode         Hexadecimal encoding and decoding
fast_info               Information about the compiled zufast headers
fast_parse_date         Parse ISO 8601 / RFC 3339 dates and timestamps
fast_parse_double       Parse numbers
fast_utf8_valid         Validate UTF-8
