* Add link for testing purposes
* Fix excerpt link positioning in Algolia search results
* Fix Algolia search input color
* Update CHANGELOG and history
Fixes#1903
* Cleanup syntax highlighting styles
* Replace hardcoded color values with [base16](http://chriskempson.com/projects/base16/) Sass variables
* Harmonize padding between GFM code blocks and `{% highlight %}` code blocks
* Improve readability of line numbers
* Add longer code block example to test double digit line numbers
* Adjust code block colors for specific skins