new_contents: """notification priority
  
  Revision ID: 67b14b57d9e4
  Revises: ba3a6442af2b
  Create Date: 2016-10-31 09:02:50.930136
  
  """
  
  # revision identifiers, used by Alembic.
  revision = '67b14b57d9e4'
  down_revision = 'ba3a6442af2b'
  branch_labels = None
  depends_on = None
  
  from alembic import op
  import sqlalchemy as sa
  
  
  def upgrade():
      op.add_column('message', sa.Column('priority', sa.Text(), nullable=False, default='normal'))
  
  
  def downgrade():
      op.drop_column('message', 'priority')
  
subject: Make it possible to select notification priority #36