added reuse information

Signed-off-by: Philip Molares <philip.molares@udo.edu>

src/history/history-entry-update.dto.ts

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 import { IsBoolean } from 'class-validator';
 
 export class HistoryEntryUpdateDto {

src/history/history-entry.dto.ts

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 import { IsBoolean, ValidateNested } from 'class-validator';
 import { NoteMetadataDto } from '../notes/note-metadata.dto';
 

src/history/history.module.ts

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 import { Module } from '@nestjs/common';
 import { LoggerModule } from '../logger/logger.module';
 import { HistoryService } from './history.service';

src/history/history.service.spec.ts

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 import { Test, TestingModule } from '@nestjs/testing';
 import { LoggerModule } from '../logger/logger.module';
 import { HistoryService } from './history.service';

src/history/history.service.ts

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2020 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
 import { Injectable } from '@nestjs/common';
 import { ConsoleLoggerService } from '../logger/console-logger.service';
 import { HistoryEntryUpdateDto } from './history-entry-update.dto';