ST4 4107 Key binding overrides not working (default for `ace_jump_after` is core ST shortcut)

[benfrain]

Hi, love this plugin, put I've noticed two things recently:

1. The default keybinding for ace_jump_after is set to ["ctrl+."] which is the macOS default in Sublime for 'next modification'.
2. Overrides in the User key map file don't seem to work. This has no effect:

{
        "keys": ["ctrl+shift+."],
        "command": "ace_jump_after"
    }

Hope you're able to fix this.