Revert pre-alpha 3.0.0 because I was supposed to push it to a branch.

This reverts commit cbf25999f0.

halyde/lib/computer.lua

@@ -0,0 +1,14 @@
+local computerlib = table.copy(computer)
+local LLcomputer = table.copy(computer)
+
+function computerlib.pullSignal(timeout)
+  local startTime = LLcomputer.uptime()
+  local result
+  repeat
+    result = {LLcomputer.pullSignal(0)}
+    coroutine.yield()
+  until result or timeout and LLcomputer.uptime() >= startTime + timeout
+  return table.unpack(result)
+end
+
+return computerlib