- version update to 7.0.10.18
* Colorspace change will remove ICC profile (reference
https://github.com/ImageMagick/ImageMagick6/issues/82).

- version update to 7.0.10.17
* Free up memory after a ICC profile is removed.

- version update to 7.0.10.16
* Don't check for incompatible ICC profiles when writing PDF images, instead
the user is expected to provide compatible image colorspaces or strip the
ICC profile with, for example, the -strip option.
* Clipping was not returning expected results (reference
https://github.com/ImageMagick/ImageMagick/discussions/2061).
* Don't write a ICC profile to PDF if the image is gray (reference
https://github.com/ImageMagick/ImageMagick/issues/2070).