I'm looking for an XMonad layout which allows to add and remove columns.
As an example:
+-----+-----+
| | 2 |
| 1 +-----+
| | 3 |
+-----+-----+
By adding a new column, the windows would arrange as follows:
+---+---+---+
| | | |
| 1 | 2 | 3 |
| | | |
+---+---+---+
Does such a layout exist?