Ability to add custom actions to table filters

[eugener]

From google code issue

I have a particular need add some custom fitering to an existing JXTable and while swing-bits-0.5.0 works spendidly for some columns, it lacks a few custom actions for others e.g.: ability to filter a numeric column > 0, < 0 (and perhaps a user entered value?), or a date column filter based on date > now, date < now. I guess it would be neat to associate the actions included with the TableColumnRenderer class and include default actions on that basis but with the option to customise the actions on a per column basis.