v0.2.0

Highlights

• implement std::error::Error for IpnetTrieError
  • it should work with ? operator for anyhow now
• switch to [prefix-trie](https://crates.io/crates/prefix-trie) as the default prefix trie implementation
• improve ip_count implementation based on clone and sub-tree removal
• implement diff function to compare two ipnet-trie structs' content

Breaking Changes

• remove with_capacity method
• longest_match_ipv4 now accepts &Ipv4Net and returns Option<&V> instead of Option<V>
• longest_match_ipv6 now accepts &Ipv6Net and returns Option<&V> instead of Option<V>
• removes matches_mut, matches_ipv4_mut, and matches_ipv6_mut methods