Split off Bubble Mountain IBJ strat to deal with Ripper

Author: blkerby

region/norfair/east/Bubble Mountain.json

@@ -3861,11 +3861,27 @@
           "canWalljump",
           "HiJump",
           "SpaceJump",
-          "canIBJ",
           "canSpringBallJumpMidAir"
         ]}
       ]
     },
+    {
+      "link": [8, 9],
+      "name": "IBJ",
+      "requires": [
+        "canIBJ",
+        {"or": [
+          {"enemyKill": {
+            "enemies": [["Ripper"]],
+            "explicitWeapons": ["ScrewAttack", "Super", "PowerBomb"]
+          }},
+          "canJumpIntoIBJ"
+        ]}
+      ],
+      "note": [
+        "Either kill the Ripper, or dodge it by jumping into IBJ."
+      ]
+    },
     {
       "id": 203,
       "link": [8, 9],