Generate author_text field dynamically

bookwyrm/migrations/0028_remove_book_author_text.py

@@ -0,0 +1,17 @@
+# Generated by Django 3.0.7 on 2020-12-21 19:57
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('bookwyrm', '0027_auto_20201220_2007'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='book',
+            name='author_text',
+        ),
+    ]