Speed up Jekyll builds
5. 6. 2018https://cloudcannon.com/tips/2017/12/08/speed-up-your-jekyll-builds/
Limiting # of posts
jekyll serve --host=0.0.0.0 --limit_posts 100 --incremental
3rd party thumb maker
https://images.weserv.nl/ with nice gdpr policy https://github.com/andrieslouw/imagesweserv/blob/3.x/Privacy-Policy.md
test
