Replace all panics with cleaner error

[mimoo]

We should replace all panics with an ErrorKind::UnexpectedError(&'static str) or something like that. So that a user can paste the error in the issues here if they run into one!

[mahmudsudo]

can i take on this ?

[mimoo]

maybe start with just a few to show us your way of doing it :o and what it looks like from a user perspective. Also, if the error can give a link to the user to post an issue it'd be great!