Update to G'MIC 3.0.0
This MR updates G'MIC to 3.0.0.
As usual, the tarball is available at my S3 bucket, I already set the correct URL here so it can be merged and cherry-picked without further modification.
Test Plan
Build Krita plugins.
Formalities Checklist
-
I confirmed this builds. -
I confirmed Krita ran and the relevant functions work. -
I tested the relevant unit tests and can confirm they are not broken. (If not possible, don't hesitate to ask for help!) -
I made sure my commits build individually and have good descriptions as per KDE guidelines. -
I made sure my code conforms to the standards set in the HACKING file. -
I can confirm the code is licensed and attributed appropriately, and that unattributed code is mine, as per KDE Licensing Policy.