format. migration

migrations/versions/4480ecc50e04_.py

@@ -0,0 +1,26 @@
+"""empty message
+
+Revision ID: 4480ecc50e04
+Revises: 3169519dc1e5
+Create Date: 2014-05-20 02:20:20.283739
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '4480ecc50e04'
+down_revision = '3169519dc1e5'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('changelog', sa.Column('timestamp', sa.BigInteger(), nullable=True))
+    ### end Alembic commands ###
+
+
+def downgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('changelog', 'timestamp')
+    ### end Alembic commands ###