Initialize intl in tests

This sucks.

test/datetime_utils_test.dart

@@ -1,8 +1,11 @@
 import 'package:gitjournal/utils/datetime.dart';
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 void main() {
   group('DateTime Utils', () {
+    initializeDateFormatting('en');
+
     test('Test random date', () {
       var dateTime = DateTime.utc(2011, 12, 23, 10, 15, 30);
       var str = toIso8601WithTimezone(dateTime);

test/flattened_notes_folder_large_test.dart

@@ -6,9 +6,12 @@ import 'package:gitjournal/core/notes_folder_fs.dart';
 import 'package:gitjournal/core/note.dart';
 import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 void main() {
   group('Flattened Notes Folder Large Test', () {
+    initializeDateFormatting('en');
+
     Directory tempDir;
     NotesFolderFS rootFolder;
 

test/flattened_notes_folder_test.dart

@@ -6,9 +6,12 @@ import 'package:gitjournal/core/notes_folder_fs.dart';
 import 'package:gitjournal/core/note.dart';
 import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 void main() {
   group('Flattened Notes Folder Test', () {
+    initializeDateFormatting('en');
+
     Directory tempDir;
     NotesFolderFS rootFolder;
 

test/md_yaml_codec_test.dart

@@ -4,6 +4,7 @@ import 'package:gitjournal/core/md_yaml_doc.dart';
 import 'package:gitjournal/core/md_yaml_doc_codec.dart';
 import 'package:gitjournal/utils/datetime.dart';
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 DateTime nowWithoutMicro() {
   var dt = DateTime.now();
@@ -12,6 +13,8 @@ DateTime nowWithoutMicro() {
 
 void main() {
   group('Serializers', () {
+    initializeDateFormatting('en');
+
     test('Markdown Serializer', () {
       var created = toIso8601WithTimezone(nowWithoutMicro());
       var note = MdYamlDoc(

test/md_yaml_doc_loader_test.dart

@@ -3,9 +3,12 @@ import 'dart:io';
 import 'package:gitjournal/core/md_yaml_doc_loader.dart';
 import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 void main() {
   group('MdYamlDocLoader', () {
+    initializeDateFormatting('en');
+
     Directory tempDir;
     String filePath;
     var contents = """---

test/md_yaml_doc_test.dart

@@ -2,8 +2,11 @@ import 'dart:collection';
 
 import 'package:gitjournal/core/md_yaml_doc.dart';
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 void main() {
+  initializeDateFormatting('en');
+
   test('Equality', () {
     // ignore: prefer_collection_literals
     var aProps = LinkedHashMap<String, dynamic>();

test/note_storage_test.dart

@@ -6,9 +6,12 @@ import 'package:gitjournal/core/note.dart';
 import 'package:gitjournal/core/md_yaml_doc.dart';
 import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 void main() {
   group('NoteStorage', () {
+    initializeDateFormatting('en');
+
     var notes = <Note>[];
     String n1Path;
     String n2Path;

test/note_test.dart

@@ -4,9 +4,12 @@ import 'package:gitjournal/core/note.dart';
 import 'package:gitjournal/core/notes_folder_fs.dart';
 import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 void main() {
   group('Note', () {
+    initializeDateFormatting('en');
+
     Directory tempDir;
 
     setUpAll(() async {

test/sorted_notes_folder_test.dart

@@ -7,9 +7,12 @@ import 'package:gitjournal/core/sorting_mode.dart';
 import 'package:gitjournal/core/note.dart';
 import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 void main() {
   group('Sorted Notes Folder Test', () {
+    initializeDateFormatting('en');
+
     Directory tempDir;
     NotesFolderFS folder;
 

test/sorting_mode_test.dart

@@ -2,9 +2,12 @@ import 'package:gitjournal/core/note.dart';
 import 'package:gitjournal/core/notes_folder_fs.dart';
 import 'package:gitjournal/core/sorting_mode.dart';
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 void main() {
   group('Sorting Mode', () {
+    initializeDateFormatting('en');
+
     test('Created', () async {
       var folder = NotesFolderFS(null, '/tmp/');
       var n1 = Note(folder, '/tmp/1.md');

test/strip_markdown_formatting_test.dart

@@ -1,8 +1,11 @@
 import 'package:gitjournal/utils/markdown.dart';
 import 'package:test/test.dart';
+import 'package:intl/date_symbol_data_local.dart';
 
 void main() {
   group('Markdown Remove Formatting', () {
+    initializeDateFormatting('en');
+
     test('Test Headers', () {
       var input = '# Hello\nHow are you?';
       expect(stripMarkdownFormatting(input), 'Hello How are you? ');