key completion in [Rainmeter] section

Build against: 3126
Requires at least: 3000

The latest feature is the key completion in the [Rainmeter] skin section.

It can identify the context that you are currently in the section and only auto-suggests you keys, which can only exist in that section. If you already have used Blur it will remember that and not suggest you Blur again. And the last feature is, that the entries are sorted by distance. If you write Update then the suggestion will put Update, OnUpdateAction, etc in that order, because the likelyhood is much higher to match what you actually meant to write (default behaviour was either sorted alphabetical or by hit count used in your file).

This release is a pre-release because I had to rewrite and refactor a ton of code and thus something might be broken.