new_contents: # Generated by Django 3.0 on 2021-03-17 11:25
  
  from django.db import migrations, models
  
  
  class Migration(migrations.Migration):
  
      dependencies = [
          ('tutorials', '0007_auto_20210311_1844'),
      ]
  
      operations = [
          migrations.RemoveField(
              model_name='tutorial',
              name='github',
          ),
          migrations.AddField(
              model_name='tutorial',
              name='github_contact',
              field=models.CharField(blank=True, max_length=50, verbose_name='github contact'),
          ),
          migrations.AlterField(
              model_name='tutorial',
              name='category',
              field=models.CharField(blank=True, choices=[('general', 'General'), ('publication', 'Publication/Licensing'), ('io', 'Upload/Download'), ('data_structure', 'Data Structure'), ('ontology', 'Ontology'), ('other', 'Other Topics')], max_length=15),
          ),
      ]
  
subject: add migration