Add State:Reset() method and State:SetState() now also accepts a callback

[Gaffal]

State:Reset()

Simply resets the current state to the initial state

local state = BasicState.new({
	name = 'bob',
	age = 50,
})

state:SetState({
	age = 25,
	random_info = true,
})

print(state)

state:Reset()
print(state)

Result:

State:SetState(callback: Callback)

Just like Roact's setState, this method also accepts a callback:

local state = BasicState.new({
	animal = 'dog',
	age = 1,
})

state:SetState(function(state)
	if (state.animal == 'dog') then
		state.cute = true
	end
	
	state.age += 1
	return state  -- the state (copy of the current state) should be returned
end)

print(state)

Result: