Log Message:
py-alembic: updated to 0.9.10

version 0.9.10

The "op.drop_constraint()" directive will now render using repr() for
the schema name, in the same way that "schema" renders for all the other op
directives.

Added basic capabilities for external dialects to support rendering of
"nested" types, like arrays, in a manner similar to that of the Postgresql
dialect.

Fixed issue where "autoincrement=True" would not render for a column that
specified it, since as of SQLAlchemy 1.1 this is no longer the default
value for "autoincrement".  Note the behavior only takes effect against the
SQLAlchemy 1.1.0 and higher; for pre-1.1 SQLAlchemy, "autoincrement=True"
does not render as was the case before.