dahlia/wand — pull request #36 by pflorczyk (2012-08-16 14:30:46+00:00)
Title: Updated image.FILTER_TYPES

Previous definition didn't cover all available filters and some of them were renamed.
Also the link was pointing to outdated site (IM 5.4) that didn't fully describe them.
I must mention that I have no idea how to handle Bessel filter. In MagickCore they added:

```c
#define BesselFilter JincFilter
```

http://www.imagemagick.org/api/MagickCore/resample_8h_source.html#l00072

I think it's there for compability and it is safe to ignore it or we would have to add special check for it.