Fix isActive to be less strict

We want to treat the one-shot keys as active even when they were interrupted -
as long as their state is not cleared. This is because when using isActive from
another plugin, or macro, that is usually in response to a key press that
already sets up `shouldCancel` - yet, the modifier is technically active still!

So `isActive` does not check the to-be-cancelled flag anymore. This makes the
Escape-OneShot plugin much more reliable as a consequence.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

src/Akela/OneShot.cpp

@@ -255,7 +255,7 @@ namespace Akela {
 
   bool
   OneShot::isActive (void) {
-    return (State && !hasTimedOut () && !shouldCancel);
+    return (State && !hasTimedOut ());
   }
 
   bool