New option: `-s`
Only grab when needed

We don't want to initially grab chord at level one and up as it will
have unwanted side effects, the following:
    super + a ; {0-9}
        echo foo
will swallow key press events for the number keys, and pressing '32' in
an Inkscape text field will result in the following input: '23'.
Add notification examples
Only replay events when asked
Version 0.4.1
Allow the modification of `CC`
Fix potential memory leak
Merge branch 'master' into latin1-xf86