Clean implementation of 👁️ and no longer increment 🏁 on checkpoint execution (redundant with 👁️)

test/tests/seen checkpoint resume.lua

@@ -0,0 +1,45 @@
+local _={}
+_[19]={}
+_[18]={}
+_[17]={}
+_[16]={}
+_[15]={}
+_[14]={}
+_[13]={text="2",tags=_[19]}
+_[12]={text="a: ",tags=_[18]}
+_[11]={text="1",tags=_[17]}
+_[10]={text="a: ",tags=_[16]}
+_[9]={text="0",tags=_[15]}
+_[8]={text="a: ",tags=_[14]}
+_[7]={_[12],_[13]}
+_[6]={_[10],_[11]}
+_[5]={_[8],_[9]}
+_[4]={"return"}
+_[3]={"text",_[7]}
+_[2]={"text",_[6]}
+_[1]={"text",_[5]}
+return {_[1],_[2],_[3],_[4]}
+--[[
+{ "text", { {
+      tags = {},
+      text = "a: "
+    }, {
+      tags = {},
+      text = "0"
+    } } }
+{ "text", { {
+      tags = {},
+      text = "a: "
+    }, {
+      tags = {},
+      text = "1"
+    } } }
+{ "text", { {
+      tags = {},
+      text = "a: "
+    }, {
+      tags = {},
+      text = "2"
+    } } }
+{ "return" }
+]]--