Update stream.json

Added issue of previous versions of Opera
Clarify y/n support stats
Add position: sticky support
data update
Merge pull request #407 from AurelioDeRosa/patch-1

Update stream.json
Merge pull request #411 from MayhemYDG/patch-3

Clarify y/n support stats
Merge pull request #410 from ai/sticky

Add position: sticke feature
data update