Can't parse values which start with a /

[ad-si]

test: "/test"
foo: "bar"

This causes following error although it's valid YAML:

Could not parse YAML: 
YAMLException: can not read a block mapping entry; 
a multiline key may not be an implicit key at line 2, column 4:

Can be fixed with:

test: "\/test"
foo: "bar"

Can not reproduce the error directly with js-yaml, so probably some error in the PureScript part.