Vscode: Remember suggestion selections

[chrisdothtml]

This is a feature that Sublime 2/3 had that I haven't found in another text editor since switching. Example:

1. I type 'con', and I get a list containing things like 'console', 'const', etc.

2. I use the arrows keys to move my selection to 'const', and hit enter to complete it

3. Next time I type 'con', it would be nice for it to remember that I chose 'const', and highlight that item in the list, so I don't need to scroll to it every time I use it

This seems like a very minor thing, but when you use it in very repetitive languages (CSS, for example), it can save a ton of time. Not very familiar with this codebase, but willing to look into it and do a PR if welcome

[jrieken]

Stretch for September, also help wanted - not easy, also not very hard

[jrieken]

Did that...

[chrisdothtml]

Awesome!