Make sure .full negative margin sticks on images wrapped in <p></p>

Update sample image

Use GFM ``` code block

Make .current stand out more in pagination bar

Hidden button labels on small screens but allow screen readers to see them

Add Keybase to author sidebar and aria-hidden to icons
- Close #138
- Close #186
- Close #188

Add LinkedIn social share button and add ARIA hidden to Font Awesome icons
- Close #174
- Close #179

Remove AdSense code and add ARIA hidden to Font Awesome icons

Wrap locale in double quotes

Revert background color back to white

Simplify feature row SCSS

Adjust button sizes

Adjust table of contents typography

Adjust type scale

Adjust sidebar navigation list and syntax highlighting styles

Simplify build scripts to use npm instead of gulp
- Close #229

Make typography refinements

Change syntax highlighting theme again

Only show post pagination if there are previous or next posts

Refine notices