See README.unittests for information on how to run
the tests.  [ticket:970]

redundant string arithmetic in memoized ForeignKey.column method
- _pre_existing_column attribute becomes optional, only needed for original Table-bound column, not proxies
- compare two ForeignKeys based on target_fullname, don't assume self._colspec is a string
- Fixed bug when overriding a Column with a ForeignKey
on a reflected table, where derived columns (i.e. the
"virtual" columns of a select, etc.) would inadvertently
call upon schema-level cleanup logic intended only
for the original column. [ticket:1278]

their referenced column, even if the column
was given a "key" attribute different from
the reflected name.  This is achieved via a
new flag on ForeignKey/ForeignKeyConstraint
called "link_to_name", if True means the given
name is the referred-to column's name, not its
assigned key.
[ticket:650]
- removed column types from sqlite doc, we
aren't going to list out "implementation" types
since they aren't significant and are less present
in 0.6
- mysql will report on missing reflected foreign
key targets in the same way as other dialects
(we can improve that to be immediate within
reflecttable(), but it should be within
ForeignKeyConstraint()).
- postgres dialect can reflect table with
an include_columns list that doesn't include
one or more primary key columns

great patch we long neglected, submitted by
Ken Kuhlman. [ticket:714]

This should assist with helping to document the reasons for testing failures.
Currently unspecified failures are defaulted to 'FIXME: unknown'.

- Added "sorted_tables" accessor to MetaData, which returns
Table objects sorted in order of dependency as a list.
This deprecates the MetaData.table_iterator() method.
The "reverse=False" keyword argument has also been
removed from util.sort_tables(); use the Python
'reversed' function to reverse the results.
[ticket:1033]