* Updater loop with period and http route
* Using DNS over TLS to update servers
* Better logging
* Remove goroutines for cyberghost updater
* Respects context for servers update (quite slow overall)
* Increase shutdown grace period to 5 seconds
* Update announcement
* Add log lines for each provider update start
- race conditions between ctx.Done and waitError channel
- Sleep for retry cancels on cancelation of context
- Stops the any loop at the start if the context was canceled
- Mentions when loops exit
- Wait for errors on triggered loop restarts
- Refers to #91
- http control server starts without waiting for unbound and/or openvpn
- Trying to get rid of waiter and use channels directly
- Simpler main.go
- More robust logic overall
