Visually align URLs

[skip ci]
Explicitly list Python versions 2.4-2.7 in trove classifiers

[skip ci]
Extend bdist_egg: include docs in the egg

[skip ci]
Extend setup.py: include tests into the egg
SQLObject 1.5.6 was released 18 Dec 2014
Merge branch '1.5' into 1.6
SQLObject 1.6.4 was released 18 Dec 2014