Fix keyboard navigation

[jonasclement]

Hello.

I noticed that this library has a few flaws regarding keyboard accessibility, and I've done my best to fix them here :)

Fixed issues:

• Type-ahead
  • Would always select the first matching option, rather than the next matching option, like a native select would.
  • Had problems when you would use the spacebar for a multi-word option
• General keyboard navigation
  • Arrow keys and type-ahead didn't work without opening the select first - this doesn't match with native select behavior either

[jonasclement]

Hello,

I added a few more commits with some additional fixes:

• The drop-down now opens when you press the spacebar while it's focused.
• Fixed enter key flashing the dropdown - now it toggles properly instead.

[andrewvasilchuk]

@jonasclement thanks for your PR. I'm investigating your changes.

[andrewvasilchuk]

@jonasclement This one still does not work for me.

Would always select the first matching option, rather than the next matching option, like a native select would.

Don't you mind if I also contribute to your PR?

[jonasclement]

Hmm, no, I see that that doesn't work - I'm sure I fixed it at some point!

You're welcome contribute as you like. I'm going to look into the issue now, and hopefully push a working fix :)

[jonasclement]

Check out a4d6bb9 - should be working as expected now :)

[jonasclement]

Hey mate - any progress on this? :)