Range of lines for fixers

Hey, thanks for this great linter plugin. I switched from syntastic recently and it's amazing how fast and responsive real time linting works. :)

In [this commit](https://github.com/IngoHeimbach/ale/commit/FD92CA17E87EB3EC59FE57D42E52D1644264DD5E) I have added clang-tidy as a possible fixer for C and C++ code. However, often I only want to fix one specific line in a huge file (for example a missing semicolon or a missing `override`). Would it be possible to modify `ALEFix` to accept a specific line or a range of lines? To stay compatible with existing code fixers could get an optional third parameter with a range of lines they can operate on.