update type docs

[Mike Bayer]

In SQLAlchemy 0.5 manual, The Types System, String:

"""This type is the base type for all string and character types, such as Unicode, TEXT, CLOB, etc. By default it generates a VARCHAR in DDL. It includes an argument length, which indicates the length in characters of the type, as well as convert_unicode and assert_unicode, which are booleans. length will be used as the length argument when generating DDL. If length is omitted, the String type resolves into the TEXT type."""

Needs to be updated now that String is no longer promoted to Text.

[Michael Trier]

Is it enough to just remove the last sentence?

[Former user]

Yes, if it's also covered in the 0.4 -> 0.5 upgrade docs, as I think it is.

[Mike Bayer]

fixed awhile back

[Mike Bayer]

Removing milestone: 0.5.0 (automated comment)