Disallowing classes in nullable & union & intersection types

[spaze]

• Support disallowing classes in nullable (?DateTime) & union (DateTime|FooBar|null) & intersection (DateTime&FooBar) types (Support disallowing classes in nullable & union & intersection types #132)
• Add composer keywords to prompt users if they would like to add these packages to require-dev (Add keywords to prompt users if they would like to add these packages to require-dev #130)

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This discussion was created from the release Disallowing classes in nullable & union & intersection types.