Version 0.13.0

New features:

• Added a new video quad feature (#745)
• Annotation id's are now persevered when reloading geojson (#747)

Bug fixes:

• Fixed setting rotation on map creation (#740)
• Fixed polygon fill and opacity interaction (#744)
• Fixed handling GCS in geojson annotation imports (#748)

Improvements to the website and documentation:

• Updated GeoJS's website (#729)
• Improved the API documentation (#738)
• Added an "editor" tutorial (#742)
• Updated some examples (#743)