* Refactored the BaseActionSource
It now uses an interface `IActionSource` instead of a concrete class and further
subclasses.
Instead of relying on a specific class for a certain action type, it now
uses methods with Optional as return values to determine a player or
machine issuing an action. Refer to the JavaDocs for the exact behaviour.
* `IActionHost` no longer extends `IGridHost`
It never used the additional functionality and if needed the `IGridNode`
will also provide a reference to the corresponding `IGridHost`.
Due to most crafting related GUIs being hardcoded to `IGridHost`,
they no longer work when `IActionHost` is not extending it. Actually
`IActionHost` is the better solution for it, as it prevents us from looking
the grid up via the `IGridHost` and potentially finding a wrong grid.
* Interfaces now only lock the currently worked slot.
This allows `DualityInterface#onChangeInventory` to update slots of the same interface, should they be the source for a requested item and therefore updating their working set accordingly to queue further crafting requests for unfulfilled stack requirements.
Reduces the visibility of all fields to private and create setters/getters
when necessary. Exceptions are fields with GuiSync as these need to be
public.
Reduces the visibility of internal methods to private/protected/default when possible.
yueh