Clarify grouped_options_for_select method API, add changelog entry

Make the method API more clear by explicitly showing the expected
arguments. This means that the options cannot be passed as second
argument because we are not relying on extract_options! anymore,
you are expected to give a selected key or `nil` if you want to pass
options, as it is the last argument.

Notice that this does not change the current method arguments contract
available in 3.2, it just brings back the same functionality with the
divider addition.

0 files changed, 0 insertions, 0 deletions