vim-patch:8.1.1068: cannot get all the information about current completion

Problem:    Cannot get all the information about current completion.
Solution:   Add complete_info(). (Shougo, Hirohito Higashi, closes vim/vim#4106)
fd133323d4

src/nvim/eval.lua

@@ -64,6 +64,7 @@ return {
     complete={args=2},
     complete_add={args=1},
     complete_check={},
+    complete_info={args={0, 1}},
     confirm={args={1, 4}},
     copy={args=1},
     cos={args=1, func="float_op_wrapper", data="&cos"},