Don't publish analytics events during development
Solution from https://discourse.gohugo.io/t/how-to-exclude-google-analytics-when-running-under-hugo-local-server/6092/34

Ensures that the contrast ratio is at least 4.5:1 (so that is complies with WCAG 2.0: https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html).

Based on hugo docs: https://gohugo.io/variables/site/#example-site-params
And developers.google recommendations: https://developers.google.com/web/tools/lighthouse/audits/description?utm_source=lighthouse&utm_medium=devtools

https://developer.mozilla.org/en-US/docs/Web/CSS/text-size-adjust

The resource is available over HTTPS.

https://webhint.io/docs/user-guide/hints/hint-no-protocol-relative-urls/

Disabling zooming is problematic for people with low vision (https://dequeuniversity.com/rules/axe/3.0/meta-viewport).

https://dequeuniversity.com/rules/axe/3.0/landmark-one-main

Fixes #49

Posts in the index page will be automatically summarized to its first 70
words, or until a user-defined <!--more--> divider. When summarized, the
"Read More" button also appears with a RelPermalink to the full post.

https://gohugo.io/content-management/summaries/

Closes #44