Log Message:
graphics/ruby-RMagick: update to 3.2.0

Update to ruby-RMagick to 3.2.0, latest 3.2 release.

## RMagick 3.2.0

This is expected to be the final deprecation release before RMagick 4.0. We
have added loads of deprecation warnings to clear the pathway for ImageMagick 7
support. Once you've fixed all of them you should be fine to upgrade to version
4.0 without any pain. There are a small handful of edge cases which we could
not cleanly deprecate, though they should be extremely rare. These will be
documented in the 4.0 release. Thanks to @dlemstra for the hard work making
this release possible.

The biggest change in moving towards RMagick 4.0 will be the fact that
`opacity` is deprecated in favor of `alpha`.

**NOTE: `opacity` is the opposite of `alpha`!!!**

If you are currently passing opacity into methods, you will need to invert the
value and use the new `alpha:` keyword argument. If you are passing an integer,
`alpha = 255 - opacity`. An integer `opacity` of 0 is an `alpha` of 255.

Also, **major kudos to @Watson1978** for enabling Ruby's memory management in
(#697).  This should go a long way towards improving RMagick's reputation for
memory usage.

Deprecations: (To be removed in RMagick 4.0)

- `Info#group` (#578) (no replacement)
- `Image#blur` (#579) (no replacement)
- Renamed `AlphaChannelType` to `AlphaChannelOption` (#596)
- Renamed `DistortImageMethod` to `DistortMethod` (#605)
- Renamed `FilterTypes` to `FilterType` (#611)
- Renamed `InterpolatePixelMethod` to `PixelInterpolateMethod` (#613)
- Renamed `ImageLayerMethod` to `LayerMethod` (#618)
- Deprecate the `opacity` property of the Pixel class. (use `alpha` instead) (#619)
- Deprecate old enum names. (use IM7 names instead) (#627)
- `StaticGravity` (use `CenterGravity` instead) (#638)
- `Image#sync_profiles` (no replacement) (#640)
- Deprecate old metric type values (use IM7 names instead) (#647)
- Deprecate `ResetAlphaChannel` (no replacement) (#644)
- Deprecate `FlattenAlphaChannel` (no replacement) (#645)
- Deprecate `MatteChannel` (no replacement) (#646)
- Deprecate `ConstantVirtualPixelMethod` (no replacement) (#649)
- Deprecate `IntegerPixel` (no replacement) (#650)
- Deprecate `Image.combine` (use `ImageList#combine` instead) (#690)
- Deprecate `Image#opacity` (use `Image#alpha` instead) (#669)
- Deprecate unnamed argument for opacity in `Image#transparent` (use keyword \ 
`alpha:` instead) (#695)
- Deprecate unnamed argument for opacity in `Image#black_threshold` and \ 
`Image#white_threshold.` (use keyword `alpha:` instead) (#709)
- Deprecate unnamed argument for opacity in `Image#matte_flood_fill` (use \ 
keyword `alpha:` instead) (#711)
- Deprecate unnamed argument for opacity in `Image#paint_transparent` (use \ 
keyword `alpha:` instead) (#717)
- Deprecate unnamed argument for opacity in `Image#transparent_chroma.` (use \ 
keyword `alpha:` instead) (#722)
- Deprecate `Draw#matte` (use `Draw#alpha` instead) (#724)

Enhancements:

- Many internal adjustments to prepare for ImageMagick 7 support.
- Added alpha property to the pixel class. (#617)
- Add combine to the ImageList class. (#589)
- Add new alpha constants (#651)
- Add `Image#mask=` (#660)
- Add `Draw#alpha` to replace `Draw#matte` (#726)
- Add Draw#image (#720)
- Add ArchLinux support (#727)

Bug Fixes:

- Fix `Font#to_s` to not raise error (#569)
- Fix a SEGV in `Image#reduce_noise` (#576)
- Fix infinite loop in `Image#compose` (#587)
- Fix enumeration memory leaks (#592) (#594) (#606) (#610) (#626)
- Don't allow `Image#class_type` to be set to undefined (#599)
- Fixed setting the name of the clip path. (#608)
- Fix memory leak in `Info#view=` (#642)
- Fix memory leak in `Image.constitute` (#665)
- Raise error on invalid arguments in `Draw#bezier` (#674)
- Fix memory leak in `Image#sparse_color` (#683)
- Prevent negative values for `Image#convolve` (#679)
- Several cleanups and fixes in the examples
- Raise error on invalid arguments in `Draw#color` (#691)
- Raise error on invalid arguments in `Draw#opacity` (#692)
- Raise error on invalid arguments in `Draw#fill_opacity` (#693)
- Raise error on invalid arguments in `Draw#stroke_opacity` (#694)
- Raise error on invalid arguments in `Draw#font_weight` (#696)
- Raise error on invalid arguments in `Draw#pattern` (#702)
- Raise error on invalid arguments in `Draw#point` (#703)
- Raise error on invalid arguments in `Draw#font_size` (#704)
- Raise error on invalid arguments in `Draw#polygon` (#705)
- Raise error on invalid arguments in `Draw#polyline` (#706)
- Raise error on invalid arguments in `Draw#rotate` (#707)
- Raise error on invalid arguments in `Draw#scale` (#708)
- Raise error on invalid arguments in `Draw#stroke_dashoffset` (#710)
- Raise error on invalid arguments in `Draw#translate` (#713)
- Raise error on invalid arguments in `Draw#text` (#714)
- Raise error on invalid arguments in `Draw#stroke` (#715)
- Raise error on invalid arguments in `Draw#matte` (#716)
- Raise error on invalid arguments in `Draw#skewx`, `Draw#skewy` (#719)
- Fix `Image#thumbnail` to keep image aspect ratio like ImageMagick (#718)
- Fix bug where `ImageList#montage` doesn't apply `border_color` & \ 
`matte_color` (#601)
- Fix stack-buffer-overflow in `Draw#annotate` (#725)
- Enable managed memory feature (#697)

Code Quality:

- Many tests written
- Several fixes to reduce compiler warnings.