title: Can't install Proj 8.0.0 for cartopy linux
body: <p>I am trying to install Cartopy on Ubuntu and need to install <code>proj v8.0.0</code> binaries for Cartopy. However when I try to <code>apt-get install proj-bin</code> I can only get <code>proj v6.3.1</code>. How do I install the latest (or at least <code>v8.0.0</code>) proj for cartopy?</p>