Move Firefox addon to webextensions

[gerdneuman]

From Firefox 57 onwards legacy addons won't be supported anymore. Since there's already a Chrome port, it should be fairly easily to make this also work in Firefox. WebExtensions already work today in Firefox though it might be possible that some API is still missing...

https://developer.mozilla.org/en-US/Add-ons/WebExtensions/Porting_a_legacy_Firefox_add-on

Thank you, your addon is a really nice and useful :)

[jnachtigall]

Starting with latest Firefox Nightly all legacy addons have been disabled and only WebExtensions are allowed. Hence this lovely plugin has also been disabled for me :-(

Would be great to see the Chrome WebExtension being adapted/ported to Firefox.

[nishanthvijayan]

Thank you for letting me know. I'll port it asap.

[jnachtigall]

@nishanthvijayan Did you have had time or will have time to look into it? Now Firefox Quantum is out and the HackerNews-Feed addon is the only one I still have that is broken :-/ I really liked it <3