Tweak highlighting of numeric literals

[dmitrivereshchagin]

• Add highlighting for binary and octal number syntax
• Highlight unary minus as operator regardless of 'iskeyword' option
• Remove L from integer literals

[amadeus]

So unfortunately these PRs you've opened need to based off of, and against the develop branch. I am curious to test them out though, so sorry for the confusion here.

[amadeus]

Oh shoot, I think you fixed this, I am on mobile which doesn't show the base branch, and I just remember seeing these from earlier

[amadeus]

I'll test this PR out tomorrow at work. I think it should be ok, but I just want to see it in action first.