Improve Ban

[jamierocks]

• Change getTimestamp() to getExpiration() and setTimestamp(long) to setExpiration(long) and possible change getTimestamp() / getExpiration() to return a Date object and setExpiration(long) to setExpiration(Date)
• Add long/Date getCreated() and setCreated(long/Date)

[Larry1123]

@lexware Just want to note we don't just remove methods, we want an api that works from version to version. So it would be creating a new method with a new name, and deprecate the old one.

[jamierocks]

Of course, I wanted to leave that decision to you.

[jamierocks]

Thanks :)