This change adds a stability value to the api annotation, with
'experimental' as default value.
enum, typedef and event annotations are never exportable, but
api annotations are needed there to make them appear in the
docs.
Nested typedefs are no longer inlined recursively, because the
resulting tables get too wide with the current template.
This follows the convention in the Closure Library of providing either namespace objects (where the property starts with a lowercase letter), constructors (where the property starts with an uppercase letter), or enums (all uppercase properties, only one instance of this in the closure library).
Currently the animation functions share the same module, namely ol.animation. We do differently for ol.control.defaults and ol.interaction.defaults, with ol.control.defaults and ol.interaction.defaults module. This commit replaces the ol.animation module by four modules, one for each animation function.
This makes things more consistent, and will make it possible to use the @exportFunction annotation for the exporting of the animation functions.
