Request 159884: Submit rubygem-activemodel-3_2

- updated to version 3.2.13
* Specify type of singular association during serialization *Steve Klabnik*

- updated to version 3.2.13
* Specify type of singular association during serialization *Steve Klabnik*

{"approve": "preliminary, version number changed"}

please make sure to wait before these depencencies are in openSUSE:Factory: rubygem-activemodel-3_2:rubygem(1.9.1:activesupport) = 3.2.13

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