Notes on deprecating fields.

Author: seth-mg

DEVELOPER.md

@@ -1,5 +1,8 @@
 ## Developer Notes
 
+#### Deprecation Strategies
+If we remove a field via deprecation, the field can still be passed in, but we will no longer deserialize it.  As an example see [PR 204](https://github.com/rosette-api/java/pull/204).
+
 #### Building and Releasing
 To be updated..