Add configurable scripting host to Olive

- Fix normalization again for reused scripting host
 - Reduce verbosity

orx-olive/src/main/kotlin/Reloadable.kt

@@ -1,10 +1,12 @@
 package org.openrndr.extra.olive
 
+import mu.KotlinLogging
 import kotlin.reflect.KMutableProperty1
 import kotlin.reflect.KProperty1
 import kotlin.reflect.full.declaredMemberProperties
 import kotlin.reflect.jvm.jvmName
 
+private val logger = KotlinLogging.logger {}
 
 private val store = mutableMapOf<String, Any>()
 
@@ -19,11 +21,9 @@ fun clearReloadables() {
  * A class with which persistent state can be reloaded from inside Olive scripts.
  */
 open class Reloadable {
-
-
-    // -- since kotlin 1.3.61 the scripting host prepends class names with the host id
     private fun normalizeClassName(name: String): String {
-        return name.replace(Regex("ScriptingHost[0-9a-f]+_"), "")
+        return name.replace(Regex("ScriptingHost[0-9a-f]+_"), // -- since kotlin 1.3.61 the scripting host prepends class names with the host id
+                "").replace(Regex("Line_[0-9]+"),"") // -- when reusing the script engine the line number increments.
     }
 
     /**
@@ -41,14 +41,14 @@ open class Reloadable {
                         val value = (e as KProperty1<Any, Any?>).get(existing)
                         val mp = (p as KMutableProperty1<Any, Any?>)
                         mp.set(this, value as Any)
-                        println("reloaded property ${p.name} <- ${value}")
+                        logger.info("reloaded property ${p.name} <- ${value}")
                     } catch (e: Throwable) {
-                        println("error while reloading property ${p.name}: ${e.message}")
+                        logger.warn("error while reloading property ${p.name}: ${e.message}")
                     }
                 }
             }
         } else {
-            println("no existing store found for $className")
+            logger.info("no existing store found for $className")
         }
         store[normalizeClassName(this::class.jvmName)] = this
     }