Version 0.5

• Added new methods:
  • exact_match_mut (fixes #6)
  • longest_match_mut (fixes #6)
  • matches (hroi#14, thanks @enzious)
  • matches_mut
• Panics when IP network address has host bits set when inserting or for exact_match also in release mode (#10)
• Fixes undefined behaviour in debug mode (hroi#18, thanks @RalfJung)
• Fixes bug when longest_match didn't return correct results (hroi#13, thanks @jiegec)
• Added more tests (thanks @rot256)