Release 0.16.2

# History

## 0.16.2

Install/update via the bootstrap script:

```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.16.2/bootstrap.sh
sudo DOKKU_TAG=v0.16.2 bash bootstrap.sh
```

### Documentation

- #3536: @josegonzalez docs: Add documentation for nginx-pre-reload limitation
- #3535: @josegonzalez Add help output for apps:exists

contrib/dokku-installer.py

@@ -10,7 +10,7 @@ import subprocess
 import sys
 import threading
 
-VERSION = 'v0.16.1'
+VERSION = 'v0.16.2'
 
 hostname = ''
 try: