Rename Mushroom -> Berry in mruby scripting API.
Fix broken fireplant link in scripting API docs
Rename Turtle -> Armadillo in mruby scripting API.
Fix mruby fetching incorrect class names for renamed stuff.
Rename goldpiece/waffle to jewel in mruby scripting API.
Replace all occurences of “Maryo” in the scripting API docs with “Alex”.
Fix docs generator crash on missing icon file
Merge branch 'mruby-api-naming' into release-2.0.0