Version 1.12

- FIX: Use of \v and \V magicness atoms in the pattern for :DeleteExcept and :SubstituteExcept cause errors like "E54: Unmatched (" and "E486: Pattern not found". Revert to the default 'magic' mode after each pattern insertion to the workhorse regular expression.
- FIX: Abort :DeleteExcept / :SubstituteExcept commands when the pattern contains the set start / end match patterns \zs / \ze, as these interfere with the internal implemenation.
- Minor: Make substitute() and matchlist() robust against 'ignorecase'.