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.
The new update contained a split of the IEnergyHandler into the IEnergyReceiver and IEnergyProvider.
Since all tiles in AE2 are basically IEnergyReceivers we use them and changed the detection of opposing tile entities from IEnergyHandler to IEnergyReceiver