replace TW5-HotZone with focusedTiddler plugin

[linonetwo]

TW5-HotZone is causing problems on some user, they find model can't be closed or something. There are some better maintained plugins like focusedTiddler, maybe the dependency can redirect to it.

[flibbles]

Wanna know the truth? I don't even know what HotZone does. Or why TiddlyMap uses it. Would focusedTiddler make sense? Would it be hard to switch over?

[linonetwo]

They are compatable, both use $:/temp/focussedTiddler tiddler, so simply replace the dependency will work.

But TW5-HotZone does more, like modify core to add css class hzone-focus, but I think that is not relevant to TW5-TiddlyMap

[flibbles]

I don't suppose you'd be interested in making the PR for this?

It might not be clear, but I'm not TiddlyMap's creator. I only know maybe 20% of the codebase. Sometimes, people will ask me to fix features I didn't know existed.

[linonetwo]

I can do this later, just need to do some test job. Mainly preventing new users installing twmap on TidGi app and cause bug with my other plugins.