new_contents: """empty message
  
  Revision ID: a048db1a5ead
  Revises: 75f579d01f0d
  Create Date: 2017-05-13 19:24:59.969661
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = 'a048db1a5ead'
  down_revision = '75f579d01f0d'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.create_table('meta',
      sa.Column('id', sa.Integer(), nullable=False),
      sa.Column('title', sa.String(), nullable=True),
      sa.Column('graph_id', sa.Integer(), nullable=True),
      sa.ForeignKeyConstraint(['graph_id'], ['graphs.id'], ),
      sa.PrimaryKeyConstraint('id')
      )
      op.drop_column('graphs', 'title')
      # ### end Alembic commands ###
  
  
  def downgrade():
      # ### commands auto generated by Alembic - please adjust! ###
      op.add_column('graphs', sa.Column('title', sa.VARCHAR(), autoincrement=False, nullable=True))
      op.drop_table('meta')
      # ### end Alembic commands ###
  
subject: Add metadata table