SimVimX Plugin v2.13

This update adds support for a feature that allows specifying default minimal activation value threshold for all LEDs, to account for a trend for heavily varying LED brightness values in some X-Plane 12 models (this caused the physical LEDs to not light up when certain X-Plane 12 models were loaded, because their relevant dataref values were too low). The updated database file uses this feature for the affected models, fixing the issue.