SQLObject supports Python 2.5+
Support for Python 2.5 has been declared obsolete
Change wording: Python 2.4 or higher is required

[skip ci]
Merge branch '1.5' into 1.6

Change wording: Python 2.5 or higher is required.

[skip ci]
Merge branch '1.6' into 1.7

Change wording: Python 2.6 or higher is required.

[skip ci]
Change wording: Python 2.6 or 2.7 is required

Explicitly list Python 2.6 and 2.7 to avoid confusion with Python 3+.

[skip ci]