This patch adds the `resize_window` configuration action, which has the
following arguments:
1. Quality of resize amongst `wider`, `narrower`, `taller`, and
`shorter` (mandatory).
2. Increment in number of cells (optional, default: 1).
This makes it possible to configure keys as such:
map ctrl+shift+left resize_window narrower
map ctrl+shift+right resize_window wider
map ctrl+shift+up resize_window taller
map ctrl+shift+down resize_window shorter
and have a behaviour which is somewhat close to Terminator's.
Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
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