Cache objects

[jeisch]

When a module requests an object, the DataStore should see if it has the object and return that, otherwise it should be created from the serialized version.

When a module "Sets" an object, the DataStore should cache the object incase any subsequent modules need to to use it. It should also serialize it for later storage.

[brichards64]

Thats already done its in a version i ahvent uplaoded yet tho.

[brichards64]

The version i currently have has two versions one where the object requires the user to do cleanup of memory one where its done for them. However in order to use the latter for standard types I need to do a template specialisation for each type which is a pain..