Add dark mode

migrations/versions/f16b80c57038_.py

@@ -0,0 +1,28 @@
+"""empty message
+
+Revision ID: f16b80c57038
+Revises: 685dff1cc01b
+Create Date: 2019-10-09 09:34:37.616747
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'f16b80c57038'
+down_revision = '685dff1cc01b'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('users', sa.Column('is_dark', sa.Boolean(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('users', 'is_dark')
+    # ### end Alembic commands ###