Simplify and improve querying

Smarter queries:

```
db.query( String )
db.query( String, Object ... args ) {
db.query( String.format( String, args ) )
}
```

or just use a [PreparedStatement](http://docs.oracle.com/javase/6/docs/api/java/sql/PreparedStatement.html PreparedStatement) which seems to bring in

```
select("table_name").all()
select("table_name").where("name",Object).groupBy("foo")
```
