Announcing Upcoming Talks and Events on the Lab Website

Announcements on our lab website are done by modifying the file static/events.md . The format is probably self-explanatory. Here is anyway some explanation. 
 The basic template is a one-liner that consists of the DATE (which can be a range), and an announcement, and is followed by a Link. 
 **DATE**: Firstname Familyname will give a talk titled "Talk title" as part of the workshop "Workshop title". [[URL]](https://link2site.html)
 
 Depending on what you present, you can modify parts of the main text. But the data has a fixed format, as Year-Month-Day for a single day and Year-Month-FirstDay/LastDay for an event over several days in the same month, and Year-FirstMonth-FirstDay/SecondMonth-SecondDay if it spans two months. The URL format is also fixed, please always type [[URL]](LINK) and replace LINK by the actual link to the event. 
 Note that after you edited the file, you always must make a new Pull Request on GitHub, please do not merge this directly, but open a pull request and then tag Mattis ( @lingulist ) to merge and review it.