Problems with public methods in derived type

Have problems with how public methods of a derived type are displayed in FORD-generated doc.

Code correctness verified with gfortran.
Note: workarounds attempted are in Fortran code comments.

```
!> mod_external module
module mod_external

implicit none

private

public external_class_t

! public :: output_int_ext
! public :: output_real_generic_ext
! public :: output_complex_generic_ext

!> type definition in external_class_t class
type external_class_t

private

contains

!> procedure declaration inside external_class_t class
procedure :: output_int_ext
! procedure, public :: output_int_ext

generic :: output_generic_ext => output_real_generic_ext, &
output_complex_generic_ext
procedure :: output_real_generic_ext
procedure :: output_complex_generic_ext

end type external_class_t

! public :: output_int_ext
! public :: output_real_generic_ext
! public :: output_complex_generic_ext

contains

!> subroutine output_int method of external_class_t in mod_external module
subroutine output_int_ext(this, an_int)

implicit none

class(external_class_t), intent(in) :: this
integer, intent(in) :: an_int !! dummy variable declaration mod_external

write (*,*) "an_int = ", an_int

end subroutine output_int_ext

!> subroutine output_real_generic_ext method of external_class_t in mod_external module
subroutine output_real_generic_ext(this, a_real)

implicit none

class(external_class_t), intent(in) :: this
real, intent(in) :: a_real !! dummy variable declaration mod_external

write (*,*) "a_real = ", a_real

end subroutine output_real_generic_ext

!> subroutine output_complex_generic_ext method of external_class_t in mod_external module
subroutine output_complex_generic_ext(this, a_complex)

implicit none

class(external_class_t), intent(in) :: this
complex, intent(in) :: a_complex !! dummy variable declaration mod_external

write (*,*) "a_complex = ", a_complex

end subroutine output_complex_generic_ext

end module mod_external
```
### Problems
- the public methods (public by default) are not showing up
- in Procedures section of main webpage
- on Procedures webpage
- they are showing up on *Modules/mod_external* (but not in the Subroutines section) and *Derived Types/external_class_t* webpages
- but on *external_class_t* webpage, the *output_int_ext* method shows up as "header" public and "body" private
- same is true for the generic and non-generic entries for *output_real_generic_ext* and *output_complex_generic_ext* methods

### Workaround
- tried adding *public* attribute to method declaration in derived type contains sections
- e.g., procedure, public :: output_int_ext
- doesn't help
- added public statements for the methods in the specification part of the module (not inside derived type)
- i.e.,
```
public :: output_int_ext
public :: output_real_generic_ext
public :: output_complex_generic_ext
```
- WORKED
- solves all above problems, but AFAIK shouldn't have to do this

(FORD version 6.2.4)