Well-formed map event types

[devioustree]

New Feature

The MapEvents file has a lot of documentation about the structure of the objects that are contained in MBMEvent.data. The documentation is excellent (although there are occasional errors) but it is a little tedious to write our own parsers, especially since it is hard to validate that our parsers are correct.

The Android SDK ships with well-formed types and it would be useful to have parity.