fix tiff support

[jdexyz]

Tiff support seems broken in the current version (f7b5e5b).
Code in this PR is tested and working.
npm test shows a lot of lint errors, but the style of the modification is in line with the existing code.
(Please be kind, it is my first pull request!)

[ghost]

good well done

[hipstersmoothie]

Does the test now pass for you? @jeremypatrickdahan

[hipstersmoothie]

Is this line actually doing anything?

[jdexyz]

I believe it modifies ifds in place.
I need to re-check this

[hipstersmoothie]

I tested it out and it does in fact work. @jeremypatrickdahan can you update the TIFF test so it passes? I will merge once you do.

[jdexyz]

Ok, the original tiff image in the samples directory had strange values in the test (pixels coordinates outside of the image). I changed it to one from http://www.petitcolas.net/watermarking/image_database/ and changed the values accordingly, double checking the values manually in Photoshop.

The line UTIF.decodeImages(data, ifds); uses a function of utif.js only available in version 2.0.0, so I updated the package.json. All tests now pass.

[hipstersmoothie]

Sweet! can you regenerate the lock file? Don't manually resolve the merge conflicts. You can just delete it and re-install.

[hipstersmoothie]

@jeremypatrickdahan Big changes happened in the repo! to resolve your merge conflicts I would:

• remove package-lock.json and run yarn to add the new dep to the lock file
• regenerate the browser/lib/*.js files

Thanks for your work!

[jdexyz]

I'm a bit confused... I did run yarn but the resulting lockfile a syntax different from the npm one.
It did regenerate the browser/lib/*.js files, although I am not sure it did it correctly ...
I'm sorry, I realise I am making this merge a bit lengthy