The requirement to call add_signal() was added to catch typos. However, this
requirement became increasingly annoying with property::<name> signals and e.g.
gears.object allowing arbitrary properties to be changed.
All of this ended up in a single commit because tests/examples fails if I first
let add_signal() emit a deprecation warning.
Signed-off-by: Uli Schlachter <psychon@znc.in>
Any clients with these tags end up somewhere random (the first tag on the first
remaining screen). This certainly can be improved in the future, but at least
this is a start.
Signed-off-by: Uli Schlachter <psychon@znc.in>