Merge pull request #59 from davedoesdev/trie_ascoltatore

Trie ascoltatore
Silenced Mosca logger.
Replaced MemoryAscoltatore with TrieAscoltatore in all others.
Bumped version to v0.7.0. Updated HISTORY.
Fixed the README.
Bumped to v0.7.1. Updated HISTORY.
Fixed contributors table for NPM.
Bumped version to 0.7.2. Updated HISTORY.
Use '+' as single level wildcard to make it consistent with mqtt ascoltatore