This reverts commit 58fb63030c.
This is not the ideal fix for the fact that scripts can use a deferred
update flag because it makes it so that filters in general cannot use
flags. We need to disable this via other means.
Deferring properties was only ever made for input and transition
sources. As other property dialogs do not have an "Ok" button that would
cause an update to happen, if the deferred flag was set the callback
would never be called.
Also clarifies the docs to reflect this.
Adds links to release functions for "new/incremented reference".
Extra info on signal handler.
Parameter description on `obs_property_list_add_*` functions, since
their parameter `name` can be confusing and it is unclear which value
is stored in obs_data_t.
Adds clarifications on calldata_ptr.