sha1 not fully secure

SHA1 is not really a good option for password hashing. SHA512 should be used instead. Of course I'm happy to fork create a pull request if that's cool.

[w-vi]

Go ahead, if nobody else is interested I am :)

[adrianvalenz]

Was this ever done?

Not yet, been too busy. So someone else is still welcome to pick it up if they desire. :) It's fairly straightforward.

[mazuhl]

@CaptSaltyJack @aydreeuhn - have switched over from SHA1 to SHA512.

Nice work!