The hover overlay was positioned relative to swatch rather than overall legend item, which put it progressively further below the text on redraw when swatch height was less than text height. Added offset for those cases so that overlay correctly covers swatch and text.
The hover overlay was positioned relative to swatch rather than overall legend item, which put it progressively further below the text on redraw when swatch height was less than text height. Added offset for those cases so that overlay correctly covers swatch and text.
Fixes #37