message: Add 0.5.0 announcement blog to readme
  This is only an update to the readme and does not represent a stable
  release.
diff: @@ -38,6 +38,7 @@ You can find an overview over the features available in Alacritty [here](./docs/
  - [A short talk about Alacritty at the Rust Meetup January 2017](https://air.mozilla.org/rust-meetup-january-2017/) (starts at 57:00)
  - [Alacritty Lands Scrollback, Publishes Benchmarks](https://jwilm.io/blog/alacritty-lands-scrollback/) September 17, 2018
  - [Version 0.3.0 Release Announcement](https://blog.christianduerr.com/alacritty_030_announcement) April 07, 2019
  +- [Version 0.5.0 Release Announcement](https://blog.christianduerr.com/alacritty_0_5_0_announcement) July 31, 2020
  ## Installation
  