Added ColumnConditional.
Made Conditions extends from Condition for better consistency.
Added preliminary Join functionality.
Created SelectExpression to allow more than just Columns in queries.
Simplified where conditions dramatically.
Preliminary implementation of SQL functions.
Added "limit" and "offset" support.
Added support for avg, count, max, and sum functions in Column.
Updated support for SQLFunctions.
Added preliminary order by and group by support.
Fixed bug in where clause support regarding layering of where clauses.