feat: address new max length for iso639

pokemon_v2/migrations/0004_iso639length_20191217.py

@@ -0,0 +1,18 @@
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pokemon_v2', '0003_auto_20160530_1132'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='language',
+            name='iso639',
+            field=models.CharField(max_length=10),
+            preserve_default=True,
+        ),
+
+    ]

pokemon_v2/models.py

@@ -499,7 +499,7 @@ class VersionGroupMoveLearnMethod(HasVersionGroup, HasMoveLearnMethod):
 
 class Language(HasName, HasOrder):
 
-    iso639 = models.CharField(max_length=2)
+    iso639 = models.CharField(max_length=10)
 
     iso3166 = models.CharField(max_length=2)