v0.0.3

Changes

• ack messages on grpc @lghinet (#18)
• change nats connection @lghinet (#17)
• Watch components @lghinet (#16)
• scope componets to current namespace @lghinet (#15)
• change pubsub marshalling @lghinet (#13)
• boolean durable sub options @oncicaradupopovici (#14)
• Added support for subscription level options @oncicaradupopovici (#6)
• Added topic to open telemetry spans @fraliv13 (#5)