FIND should have history to recall previous searches

[dbareis]

Often there are a number of strings we need to search for and there should be an option as to the history size. Perhaps the history could be global or per file or specified by file regexp.

[janwilmans]

Thanks you your suggestions, I'm afraid I'm not actively adding new features at the moment, so unless somebody provides a pull request, I don't think this will happen any time soon, sorry ;)