Sergei Demchenko

See context here: #48

MSIDTokenSerializer should be able to ser/deser any class type, not only MSIDToken.

``` // Using the dictionary @{ key : value } syntax here causes _cache to leak. Yay legacy runtime! NSDictionary *wrapper = [NSDictionary dictionaryWithObjectsAndKeys:cacheCopy, @"tokenCache",@CURRENT_WRAPPER_CACHE_VERSION, @"version", nil]; ```

Currently it can serialize/deserialize to NSData via NSArchiver. We might need to add json serialization as well.

## Proposed changes Changes: * Update common core submodule. * Automation improvements. ## Type of change - [ ] Feature work - [ ] Bug fix - [ ] Documentation...

## Proposed changes Describe what this PR is trying to do. ## Type of change - [ ] Feature work - [ ] Bug fix - [ ] Documentation -...