regex support

[FabianoLothor]

It would be great to be able to filter the tasks by a regex.

Not only in the search field, but also in the tag-filter (specially there).

The reason for me is because personally I don't use tags for my checklists, for me if has a checkbox, it's a task, but I have some "empty checklists" left in the journals for the case I need them and currently it's impossible to filter them with this plugin.