reCAPTCHA v2 no longer supported

Hi alsd4git,

don't know if you're still interested in updating this app. But it's still the best 4cham viewer ever made.

After recently site updates, we can't post via app anymore, cause reCAPTCHA v2 is sadly no longer supported on 4chan.

Would be really nice if you could check this issue.. If it's not to much work to change.

Thanks mate.