v0.2.0

• Replaced asserts with push_error + Error return value
  • This fixed some nasty invisible bugs
• Added example for server/client implementation
• Improved MatchaPeer class
  • Made it extend from WebRTCPeerConnection
• Improved MatchaRoom class
  • Made it extend from MultiplayerPeer
  • Added peer_joined/peer_left signals for direct access to the peer
  • Changed naming from info_hash to room_id
  • Added client/server/mesh functionality
• Improved TrackerClient class
  • Proper user-agent for non-web environment
  • Cleaner code
  • More documentation
• Prepared nostr implementation
  • In the future you can use nostr aswell as webtorrent
• Prepared lobby implementation
  • In the future you can find/list/create lobbies