Added support for running a Dash search in the background

[stufflebeam]

These changes add support for running a Dash search in the background, without switching to Dash as the active application, keeping the focus on Sublime Text. This is useful when you're using a dual-monitor setup, or even just multiple windows side by side on a single screen, and you'd like to search while keeping your keyboard focus in the editor.

Key bindings can be set up for the regular search and then the background search like this:

    { "keys": ["YOUR HOTKEY"], "command": "dash_doc"},
    { "keys": ["YOUR HOTKEY"], "command": "dash_doc",
                               "args": { "flip_syntax_sensitive": true } },
    { "keys": ["YOUR HOTKEY"], "command": "dash_doc",
                               "args": { "run_in_background": true } },
        { "keys": ["YOUR HOTKEY"], "command": "dash_doc",
                               "args": { "flip_syntax_sensitive": true,
                                     "run_in_background": true } }

[farcaller]

Thanks 👍

[stufflebeam]

You're welcome - Thank you!