fix rendering of foreign key constraint when using a metadata schema
(hopefully) make the code a bit more readable
Fix sorted of None values in compare for python 3
Alter autogenerate tests to show python3 problem on already existing tables sort
Merge remote-tracking branch 'github/pr/14' into pr14
changelog for pr github:14
Support autogenerating migrations for tables with 255 or more columns
Merged in paradoxxxzero/alembic/paradoxxxzero/fix-sorted-of-none-values-in-compare-for-1403597500844 (pull request #23)

Fix sorted of None values in compare for python 3
- changelog for pullreq bitbucket:23
- ignore __init__.py in versions directory, fixes #95.
0.6.6
Adding TextClause support to server_default
moving textclause logic into _render_server_default
adding mike's patch
Rendering expressions for indexes
- Added support for functional indexes when using the
:meth:`.Operations.create_index` directive.   Within the list of columns,
the SQLAlchemy ``text()`` construct can be sent, embedding a literal
SQL expression; the :meth:`.Operations.create_index` will perform some hackery
behind the scenes to get the :class:`.Index` construct to cooperate.
This works around some current limitations in :class:`.Index`
which should be resolved on the SQLAlchemy side at some point.
fixes #222
- Added support for functional indexes when using the
:meth:`.Operations.create_index` directive.   Within the list of columns,
the SQLAlchemy ``text()`` construct can be sent, embedding a literal
SQL expression; the :meth:`.Operations.create_index` will perform some hackery
behind the scenes to get the :class:`.Index` construct to cooperate.
This works around some current limitations in :class:`.Index`
which should be resolved on the SQLAlchemy side at some point.
fixes #222
replacing eval in multidb template with globals() function lookup
Merged in andreasgrapentin/alembic/template_eval (pull request #25)

replacing eval in multidb template with globals() function lookup
replacing eval in multidb template with globals() function lookup