Add checkpoints
Make validation schema for versioned Release
Latest versioned release and validation

still TODO for award and contract
Merge branch 'master' of https://github.com/open-contracting/standard
Update reference
ipynb update
Versioned validation schema now resolves all refs

jsonmerge - ocds branch - commit 857f87
versionedRelease should be the versioned release validation schema
Make absolute reference so embeds - also specify master not standard in url
Undo compiled release ref change
Add schema and title to versioned release validation schema
Add schema, id, and title to auto-generated schema
Typo
Add test for versioned release validation
Add null to optional fields
Add null to versioned release schema
Create new validation schema
Remove display - see standard-collaborator instead
Release schema notes turned into github issues.
Move ipynb into utils