Gson path defaults

[LachlanMcKee]

At the moment there are quite a few properties that you can configure on a AutoGsonAdapter annotation.

The current defaults seem fairly reasonable for most cases, however people will always have different requirements and the defaults may be wrong.

As a consequence, a user would have to constantly copy and paste their desired defaults to each individual AutoGsonAdapter annotation.

The proposed solution is to create a GsonPathDefaults annotation which a user could specify their desired defaults in a single location which they can then use as a single source of truth.

The benefits of this is that there would be less code to write, and all the defaults would exist in a central location.

[LachlanMcKee]

This feature has been implemented.