Note for future rebases: it is expected that `dune b
@test/passing/runtest` will fail at this stage, in my case with
output:

File "test/passing/dune.inc", line 3594, characters 0-205:
3594 | (rule
3595 |  (deps tests/.ocamlformat )
3596 |  (package ocamlformat)
3597 |  (action
3598 |   (with-stdout-to local.ml.stdout
3599 |    (with-stderr-to local.ml.stderr
3600 |      (run %{bin:ocamlformat} --margin-check %{dep:tests/local.ml})))))
Command exited with code 1.

For reference during future rebasing: `dune b @test/passing/runtest`
is not expected to succeed on this commit.  I get formatting changes
in `test/passing/tests/local.ml` where `local_` has been turned into
an attribute.

For future reference during rebasing: `dune b @test/passing/runtest`
is not expected to pass on this commit.  Some uses of `local_` are
turned into `[%extension.local]`.

For reference during future rebases: `dune b @test/passing/runtest` is
expected to pass on this commit.

For future rebases: `make test` should pass at this stage.  It may be
necessary to run `dune fmt` and `make regtests-promote` (but I checked
`dune b @test/passing/runtest` succeeded first)

Autogenerated attributes are now 'extension.foo' instead of 'ocaml.foo'

Signed-off-by: Cameron Wong <cwong@janestreet.com>

* Initial support for the include_functor extension
* Add test for include functor

Signed-off-by: Chris Casinghino <ccasinghino@janestreet.com>

)

A bug in the previous patch for locals causes ocamlformat to incorrectly
format local arguments which are punned with a label and have a type signature:

    fun ~(local_ x : t) -> ...

by putting an extra invalid pair of parens around (x : t). This patch removes
the parens.

Signed-off-by: Stephen Dolan <sdolan@janestreet.com>

)

Signed-off-by: Stephen Dolan <sdolan@janestreet.com>

…] (oxcaml#6)

Signed-off-by: Stephen Dolan <sdolan@janestreet.com>

Signed-off-by: Chris Casinghino <ccasinghino@janestreet.com>