Update 2.2.0

This minor update includes the following changes:

• Added a brand new dialogue system, built with Lua. It can be used in other 0.5.x Psych Engine mods as well.
• Added Italian localization for the dialogues, provided by Ako.
• Imported many Lua callbacks from Psych 0.5.2, except clearUnusedMemory, objectsOverlap, initSaveData, flushSaveData, getDataFromSave and setDataFromSave.
• makeAnimatedLuaSprite has been updated but with limited functionality, supporting only packer and sparrow atlas. It is still an improvement over its previous state.
• Disabled a few Lua functions that could compromise the app's security.
• Reworked require so Lua libraries can be loaded from a libs/ folder inside mods or the mod folder in use.
• The autoloader in story mode will no longer try to load a dialogue if a Lua script requests a stop of the countdown or end sequence. When this happens, it is assumed the script will handle these kind of events on its own.
• Fixed a crash when selecting "BACK" in the difficulty change menu.
• Fixed the background being left empty when the game has no Alt image in the main menu.
• Minor asset changes.