Merge branch 'feature/t-shirt-preorder'
Hide opportunities from nav
Fix madlab event expiry
Merge branch 'master' into draft
Add embedded Google calendar
Move calendar to events page
Merge branch 'feature/calendar' into draft
Add jekyll-tagging
Add some categories
Rename expired post excluder
Extract post-item into partial
Add custom tag to generate category tag clouds
Pretty permalinks for tag pages
Use tag as page title
Add ruby+rake to humans.txt