Make the one error per line configurable.

.ttarpit.json

@@ -1,6 +1,7 @@
 {
   "StartingHP": 10,
   "Deadline": "1h30m0s",
+  "OneErrorPerLine": true,
   "Includes": [
     "^.*.go$"
   ],

config/settings.go

@@ -21,6 +21,7 @@ type Config struct {
   Processes map[string]Process
   StartingHP int
   Deadline string
+  OneErrorPerLine bool
 
   ConfigPath string
 

game/engine.go

@@ -50,7 +50,7 @@ func (game *Game) SeenError(errinfo data.ErrInfo) int {
 }
 
 func (game *Game) TakeHit(build *builder.Builder, errinfo data.ErrInfo) {
-  if game.SeenError(errinfo) > 1 {
+  if game.SeenError(errinfo) > 1 && game.settings.OneErrorPerLine {
     return
   }