I like it better with the space in between. Normally I'm used to not
using spaces, but since you can here, do it.

Following this guide to rename the project:
https://digitalleaves.com/blog/2017/06/rename-xcode-project/

Not yet finished, but committing this stage of the rename now.

Previously I only had a key equivalent on the "Escape" key because you
can only set a single key equivalent. But I wanted the "Quit" button to
work on both "Escape" and "q" presses.

I tried to do this by overriding `performKeyEquivalent:`:

    - (BOOL)performKeyEquivalent:(NSEvent *)theEvent
    {
        if ([[theEvent characters] isEqualToString:@"q"] ||
            [theEvent keyCode] == kVK_Escape) {
        NSLog(@"%@", theEvent);
            return YES;
        }

        return [super performKeyEquivalent:theEvent];
    }

The method was called and it logged correctly, but the `IBAction`
wouldn't run. Maybe this doesn't work for what I want it to? Can't
figure out what the problem is.

Didn't want to deal any more so just overrode `keyDown:` instead and got
rid of the `IBAction`, just terminating the application in code.

Turns out you can't register yourself as the default app handler when in
a sandbox, which apparently is the default when creating a new Xcode
project.

> that’s all…. except that I’m running my application in a Sandbox
> environment, and it returns the error -54 !
>
> After trying to find a solution for this, and on the
> devforums.apple.com forum, it seems that there is currently no
> solution, Apple just decided to remove that feature since Yosemite….
> It still works on Mavericks.  That of course very disappointing, and
> even not mentioned in the Apple’s documentation.

(https://blog.sovapps.com/make-your-application-reply-to-mailto-links/)

Fuck that. Turn off sandboxing. Yay it works now.

Add a class to get the current bundle handler for `mailto` URLs. It will
be extended to set CopyMailto as the default handler after saving the
original.

Set deployment target to OS X 10.6 and the Xcode project to Xcode 3.2.