v0.6.0

• BREAKING: Now requires Docusaurus v2.0.0-alpha73
• BREAKING: Update autocomplete.js to v1-alpha, which features an all-new design and renamed class names (#32).
• FEAT: Use i18n system for translation of the searchbar itself, translate to German and English (#29)
  • BREAKING: To specfiy a non-default placeholder if no results are found, overwrite the newly introduced translation keys instead of .d-s-l-a .aa-dropdown-menu .aa-suggestion-empty::after { content: "No results"; }
• FEAT: Yellow result higlighting no longer adds a parameter to the URL and vanishes on refresh (#28)
• FIX: Support for language th