Fixed #2, removed initial check for existing entries, adding a separate one

z/entry.go

@@ -47,7 +47,7 @@ func NewEntry(
     return Entry{}, err
   }
 
-  if newEntry.IsFinishedAfterBegan() == false {
+  if id == "" && newEntry.IsFinishedAfterBegan() == false {
     return Entry{}, errors.New("beginning time of tracking cannot be after finish time")
   }
 

z/finishCmd.go

@@ -81,6 +81,11 @@ var finishCmd = &cobra.Command{
       }
     }
 
+    if runningEntry.IsFinishedAfterBegan() == false {
+      fmt.Printf("%s %+v\n", CharError, "beginning time of tracking cannot be after finish time")
+      os.Exit(1)
+    }
+
     _, err = database.FinishEntry(user, runningEntry)
     if err != nil {
       fmt.Printf("%s %+v\n", CharError, err)