Some fixes

Author: hannotify

src/main/kotlin/com/github/hannotify/classyfire/data/PersistRepository.kt

@@ -12,7 +12,7 @@ interface PersistRepository<E> : Repository<E> {
         }
 
         FileOutputStream(targetFile, true).bufferedWriter().use { out ->
-            findAll().forEach { out.appendln(stringFromEntity(it)) }
+            findAll().forEach { out.appendLine(stringFromEntity(it)) }
         }
     }
 

src/main/kotlin/com/github/hannotify/classyfire/data/category/CategoryRepository.kt

@@ -11,10 +11,9 @@ class CategoryRepository(private val storageLocation: Path) : RetrieveRepository
 
     fun findSubcategoriesByCategoryType(categoryType: CategoryType):
             List<Category> {
-        return findAll().stream()
+        return findAll()
                 .filter { it.isSubcategory() }
                 .filter { categoryType == it.categoryType }
-                .collect(Collectors.toUnmodifiableList())
     }
 
     override fun entityFromString(string: String): Category = Category.fromString(string)

src/main/kotlin/com/github/hannotify/classyfire/data/classification/persister/IngCsvClassificationPersister.kt

@@ -14,8 +14,7 @@ class IngCsvClassificationPersister : ClassificationPersister {
                 classification.transaction.amount.toPlainString().replace('.', ','),
                 classification.transaction.transactionType,
                 classification.transaction.remarks,
-                classification.category.toString()).stream()
-                .collect(Collectors.joining(DELIMITER))
+                classification.category.toString()).joinToString(DELIMITER)
     }
 
     override fun getCategoryString(classificationString: String): String {

src/main/kotlin/com/github/hannotify/classyfire/data/transaction/Transaction.kt

@@ -22,7 +22,7 @@ data class Transaction(val date: LocalDate, val description: String, val benefic
         println(transactionHeader)
         println("-".repeat(transactionHeader.length))
         println("Date: $date   Amount: $amount   Description: $description   Remarks:")
-        println("$remarks")
+        println(remarks)
         println()
     }
 }