Amer Alimanović

Replace mosca with aedes

2

`mqtt-shepherd` currently fails on Node.js >8.x. Mosca isn't actively maintained and there's a successor project with a similar API from the same author. This project is promising a better performance...

- Remove Q - Use native promises - Improve performance example benchmark ``` Q>resolve>then 100k times: real 0m7.459s user 0m7.121s sys 0m0.346s V8 Promose>resolve>then 100k times: real 0m0.980s user 0m0.884s...