Implement parts of clientchunkpool and fix softlock in the process

clientchunkpool.py

@@ -5,8 +5,31 @@ class ClientChunkPool(ChunkPool):
 	A ChunkPool that requests/loads chunks from a client.
 	"""
 	
-	def __init__(self):
+	def __init__(self, client):
 		super().__init__()
-		self.max_age = 10 #s
+		
+		self._client = client
 	
-	pass
+	#def commit_changes(self):
+		#changes = []
+		
+		#for pos, chunk in self._chunks.items():
+			#changes.append((pos, chunk.get_changes()))
+			#chunk.commit_changes()
+		
+		#return changes
+	
+	def apply_changes(self, changes):
+		super().apply_changes(changes)
+		
+		self._client.redraw()
+	
+	def save_changes(self):
+		changes = self.commit_changes()
+		self._client.send_changes(changes)
+	
+	def load(self, pos):
+		raise Exception
+	
+	def load_list(self, coords):
+		self._client.request_chunks(coords)