add update checks

modified:   lb.py
new file:   version/104.txt

lb.py

@@ -7,6 +7,13 @@
 def code():
     def cls():
         os.system('cls' if os.name=='nt' else 'clear')
+    chkurl = 'https://https://github.com/Freakybob-Team/lb/blob/main/version/104.txt'
+    chkresponse = requests.get(chkurl)
+    if chkresponse.status_code == 200:
+        code()
+    else:
+        print("WARNING: Your version is out of date.")
+        code()
     print("Welcome to LB, also known as LigmaBalls.")
     print("For help, type help below.")
     command = input("lb < ")

version/104.txt

@@ -0,0 +1 @@
+is out of date: NO