Draft of post on metadata
Fix typo feedback from pull request
Present-time -> presentation-time
Fix github fake URLs to at least be sensible
Missing quote
Fix spelling
Update github URL
Changes and formatting from Greg after face-to-face chat (thanks!)
Add another blog post about template for lessons
Add link to Greg's new blog post
Fix filename
Add excerpt
Merge branch 'template-metadata' of github.com:gdevenyi/site
Merge branch 'yet-another-template-for-lessons' of github.com:r-gaia-cs/site
Reconciling blog posts