[GitHub] metron issue #954: METRON-1478 Move type definitions to dev-dependencies

[sardell]

Github user sardell commented on the issue:

    https://github.com/apache/metron/pull/954
  
    I think it's better to default to [coupling @types with their respective 
modules in 
package.json](https://github.com/Microsoft/types-publisher/issues/81).


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