Add back command computer block drops

This has been broken for almost a year (28th Jan 2020), and I never
noticed. Good job me.

Fixes #641, closes #648 (basically the same, but targetting 1.15.x)

patchwork.md

@@ -536,4 +536,45 @@ e4b0a5b3ce035eb23feb4191432fc49af5772c5b
 
 2020 -> 2021
 ```
-A huge amount of changes.
+A huge amount of changes.
+
+```
+542b66c79a9b08e080c39c9a73d74ffe71c0106a
+
+Add back command computer block drops
+```
+Didn't port some forge-related changes, but it works.
+
+```
+dd6f97622e6c18ce0d8988da6a5bede45c94ca5d
+
+Prevent reflection errors crashing the game
+```
+
+```
+92be0126df63927d07fc695945f8b98e328f945a
+
+Fix disk recipes
+```
+Dye recipes actually work now.
+
+```
+1edb7288b974aec3764b0a820edce7e9eee38e66
+
+Merge branch 'mc-1.15.x' into mc-1.16.x
+```
+New version: 1.95.1.
+
+```
+41226371f3b5fd35f48b6d39c2e8e0c277125b21
+
+Add isReadOnly to fs.attributes (#639)
+```
+Also changed some lua test files, but made the changes anyway.
+
+```
+b2e54014869fac4b819b01b6c24e550ca113ce8a
+
+Added Numpad Enter Support in rom lua programs. (#657)
+```
+Just lua changes.

src/main/resources/data/computercraft/loot_tables/blocks/computer_command.json

@@ -1,11 +1,34 @@
 {
-    "type": "minecraft:block",
-    "pools": [
+  "type": "minecraft:block",
+  "pools": [
+    {
+      "name": "main",
+      "rolls": 1,
+      "entries": [
         {
-            "rolls": 1,
-            "entries": [
-                { "type": "minecraft:dynamic", "name": "computercraft:computer" }
-            ]
+          "type": "minecraft:dynamic",
+          "name": "computercraft:computer"
         }
-    ]
-}
+      ],
+      "conditions": [
+        {
+          "condition": "minecraft:alternative",
+          "terms": [
+            {
+              "condition": "computercraft:block_named"
+            },
+            {
+              "condition": "computercraft:has_id"
+            },
+            {
+              "condition": "minecraft:inverted",
+              "term": {
+                "condition": "computercraft:player_creative"
+              }
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}