0.8.3 "Stairway To Heaven"

This release is small, again, but includes useful fixes, again, and some nice new features... again. A somewhat-rare, but serious, bug can happen in earlier versions when a TypingLabel has wrapping text and an effect that changes its offsets variable. This is fixed now. The vertical position of text with [%200]-style scaling now is centered on the middle of the line, rather than the bottom of the line. This matches how other code expected text to scale, so there's less empty space above and less overlap with other lines below. That feature was made possible by IgorApplications, so thanks! There's a new font here, Kingthings Petrock, which is similar to the existing Kingthings Foundation but is less decorative/ornamented, and more legible as the type of text encountered everyday in (a fantasy version of) medieval times.