Changed
- Different appearance when a document is reduced to a thumbnail
image.
Fixed
- When a new Playground is initialized, the name of the YAML file was
missing in the sidebar dropdown and the share link.
- When a "flash" message with the Bootstap color "success" was shown
at the top of the screen, the timeout for removing the message
could remove messages that the user had not yet had the opportunity
to read.
- In a `review` screen, error messages about invalid variable names
were not shown in all cases where the variable name was invalid.