This renames/moves the following properties:
* sway_view.{x,y,width,height} ->
sway_container.content_{x,y,width,height}
* This is required to support placeholder containers as they don't
have a view.
* sway_container_state.view_{x,y,width,height} ->
sway_container_state.content_{x,y,width,height}
* To remain consistent with the above.
* sway_container_state.con_{x,y,width,height} ->
sway_container_state.{x,y,width,height}
* The con prefix was there to give it contrast from the view
properties, and is no longer useful.
The function container_set_geometry_from_floating_view has also been
renamed to container_set_geometry_from_content.
In the conversion to `parse_boolean` for `cmd_ws_auto_back_and_forth`,
the `negation` was never removed causing the setting to be the opposite
of what it should be.
`i3 4.16` allows users to list multiple outputs for a workspace and the
first available will be used. The syntax is as follows:
`workspace <workspace> output <outputs...>`
Additionally when the workspace is created, the outputs get added to the
output priority list in the order specified. This ensures that if a higher
output gets connected, the workspace will move to the higher output. This
works the same way as if the user had a workspace on an output, disconnected
the output, and then later reconnected the output.
Currently, variables cannot contain commands and cannot span more than
one argument. This is due to variable replacement happening after
determining the handler and after splitting the config line into
arguments.
This changes the process to:
0. Check for empty lines and block boundaries
1. Split the arguments as before
2. Verify that the first argument is not a variable. If needed the
following occurs
a. Perform variable replacement on just the first argument
b. Join the arguments back together then split the arguments again. This is needed when the variable
contains the command and arguments for the command.
3. Determine the handler
4. If the handler is cmd_set, escape the variable name so that it does
not get replaced
5. Join the arguments back together, do variable replacement on the full
command, and split the arguments again
6. Perform any needed quote stripping or unescaping on arguments
7. Run the command handler
This allows for config snippets such as:
```
set $super bindsym Mod4
$super+a exec some-command
```
and
```
set $bg bg #ffffff solid_color
output * $bg
```
