Use Sublime Text word/subword movement with alt/ctrl

[dayorbyte]

The only per-word movement in the existing sublime controls is sub-word, but it uses the full word keyboard shortcuts. This PR switches the alt shortcut to be full word and adds ctrl as subword to sync up with Sublime's defaults

[marijnh]

You once again changed the behavior in a way that breaks the default linux bindings. I'm going to hold off merging/fixing this until someone can point me at defining information about per-platform bindings for ST. Unfortunately, and bafflingly, no such thing seems to exist online (at least in the first page of google results)

[dayorbyte]

I'll see what I can find. Worst case I might be able to bring VMs up to check manually since the changes aren't that complicated.

[marijnh]

They are probably also in some JSON file in the ST distribution tarballs.

[dayorbyte]

windows: https://gist.github.com/jeffjenkins/092d5df2baf5c7e384bca23061b6a96f

ctrl+alt+{up,down}

linux: https://gist.github.com/jeffjenkins/5c53c90c897d3796f9a150abc42c01a2

alt+shift+{up,down}

osx: https://gist.github.com/jeffjenkins/1900171a7801432d6a91903f5497abab

ctrl+shift+{up,down}

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I had (naively, it seems) assumed that linux and windows would be the same. I can make a fix for this, but I need to know two things:

• What's the most official way to check for linux vs mac vs windows?
• should I amend the existing commit and overwrite my branch so this is a single commit or add another commit with the next changes? This is the first time I've made changes to a pull request, so I'm not sure what the preferred flow is

[marijnh]

The main library is recognizing windows with /win/i.test(navigator.platform), so I guess you could use that, the existing mac check, and just call everything else 'unix'? That's not super accurate, but close enough for this purpose, I think.

I do prefer to get a single patch (use amend or rebase), but if you're having trouble I can also do the squashing myself.

[dayorbyte]

Great, thanks! I'll get this together and update later in the week