Release 0.20.1

# History

## 0.20.1

Install/update via the bootstrap script:

```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.20.1/bootstrap.sh
sudo DOKKU_TAG=v0.20.1 bash bootstrap.sh
```

### Bug Fixes

- #3916: @josegonzalez Change error exit to warning when no apps exist

### New Features

- #3918: @josegonzalez Upgrade herokuish to 0.5.11
- #3915: @josegonzalez Add ability to check if a plugin has been installed
- #3914: @josegonzalez Add ability to change or disable the access/error log path
- #3913: @josegonzalez Upgrade herokuish

### Documentation

- #3907: @josegonzalez Add sponsoring link to issue template
- #3904: @jazzzz Update dokku-apt entry
- #3902: @josegonzalez Remove extra commas from network docs

### Other

- #3909: @dependabot-preview[bot] chore(deps): bump werkzeug from 1.0.0 to 1.0.1 in /tests/apps/python-flask
- #3903: @dependabot-preview[bot] chore(deps-dev): bump heroku/heroku-buildpack-php from 172 to 173 in /tests/apps/php

README.md

@@ -99,8 +99,8 @@ Otherwise, you will need to import the keypair manually after installation using
 To install the latest stable release, run the following commands as a user who has access to `sudo`:
 
 ```shell
-wget https://raw.githubusercontent.com/dokku/dokku/v0.20.0/bootstrap.sh
-sudo DOKKU_TAG=v0.20.0 bash bootstrap.sh
+wget https://raw.githubusercontent.com/dokku/dokku/v0.20.1/bootstrap.sh
+sudo DOKKU_TAG=v0.20.1 bash bootstrap.sh
 ```
 
 You can then proceed to the ip address or domain name associated with your server to complete the web-based installation.