Fix crash on ios.

[dvc94ch]

not sure why exactly failure::Error::from() caused some crash on ios, but since failure has been deprecated for a while updated to thiserror.

[dvc94ch]

ah realized that the place where the crash originated is not even visible in the PR. the crash happened on this line, when failure::Error::from was called. since I'm writing an ios app on a linux machine, the debugging experience is a bit poor so I can't tell you exactly what happened.

• [0] https://github.com/piderman314/bardecoder/blob/master/src/decoder.rs#L43

[dvc94ch]

but here is a screenshot of a qrcode scanned with bardecoder on ios

[piderman314]

Thanks for looking into this. I'm on holiday at the moment so I'll have another look later this week and see if this can be merged and released.

[piderman314]

Hey, I had a look and it turns out you forgot to replace a use failure::Error; in image_tests.rs. Can you please fix that? I also updated master with a Github Actions build file and some clippy fixes so please merge that into your branch before continuing.

[piderman314]

Alright, thanks for the PR. I have merged it and published a 0.4.0 version to crates.io .