Add Prettier ignore file

Stop prettier from messing with Markdown files.

Fix grammar

Update CHANGELOG and history

 Minimize JSON data (#1449)

* Remove Lunr trimmer & bring back colons

* Add Greek Stemmer

* Translate search_placeholder_text and results_found to Greek

* Minimize JSON data

* Truncate Words

* Move store variable into a new file

* Move Lunr files into a new folder

* Add defer to lunr scripts

* Add search_full_content switch

Update CHANGELOG and history

Upgrade Font Awesome to version 5 (#1446)

Upgrade Font Awesome to version 5 (SVG with JavaScript)

Close #1396

Merge branch 'master' of https://github.com/mmistakes/minimal-mistakes

* 'master' of https://github.com/mmistakes/minimal-mistakes:
  Only load Lunr languages that exist in theme

Only load Lunr languages that exist in theme

ref: https://github.com/mmistakes/minimal-mistakes/pull/1445#issuecomment-355153434

Only load Lunr languages that exist in theme

ref https://github.com/mmistakes/minimal-mistakes/pull/1445#issuecomment-355153434

Update CHANGELOG and history

Fix stuck sidebar when resizing viewport

Close #1447

Update CHANGELOG and history

Add lunr-gr.js and fix lunr-en.js  (#1445)

* Remove Lunr trimmer & bring back colons
* Add Greek Stemmer
* Translate `search_placeholder_text` and `results_found` to Greek

Update CHANGELOG and history

Round top right corner of code block icon

Reduce visual weight of code blocks

Flatten shadow and remove borders relying on background color to highlight code.

Update CHANGELOG and history

Fix line number width in code blocks

Code blocks with short line widths can cause `td.gutter` width to stretch, adding in undesired white space.

Declaring widths on the table's columns fixes #1437

Add `{% highlight linenos %}` examples to test and demo sites.

Fix heading

Update Font Awesome link