avy-goto-word-1 errors on `[`

[tanzoniteblack]

If you attempt to call avy-goto-word-1 with [, it throws the error avy--regex-candidates: Invalid regexp: "Unmatched [ or [^".

[tanzoniteblack]

Similar issues if you attempt to call this with other regex specific characters like \.

[abo-abo]

Thanks.

[tanzoniteblack]

Thanks for fixing so quickly!