Add support for the vips_gamma() function via a new func Gamma() on ImageRef

[jawngee]

No description provided.

[tonimelisma]

Hey @jawngee! Thanks so much for the PR. Let me know when it's ready for review!

[coveralls]

coverage: 73.557% (-0.001%) from 73.558%
when pulling 6e8ffb5 on jawngee:gamma
into 637db4b on davidbyttow:master.

[jawngee]

I think it's ready :) I wasn't really sure about the test though because I'm not sure how to test it. So all the test does is make sure it doesn't throw an error when called. Thanks, Jon.

…

On Jun 3, 2024, at 11:31 PM, Toni Melisma ***@***.***> wrote: Hey @jawngee <https://github.com/jawngee>! Thanks so much for the PR. Let me know when it's ready for review! — Reply to this email directly, view it on GitHub <#433 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAAK3ILCE67F6JL7DKPQHTLZFSK6DAVCNFSM6AAAAABIWYEO46VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDCNBVGY2TAOBQGQ>. You are receiving this because you were mentioned.