add font bsky

aifont.py

@@ -35,7 +35,12 @@ glyph.width = 1024
 
 glyph = icons.createChar(0xE003, "bluesky")
 glyph.importOutlines("/tmp/bluesky.svg")
-glyph.transform((scale/100.0, 0, 0, scale/100.0, 0, 0))
+# center vertically: move to baseline
+bb = glyph.boundingBox()
+yshift = -bb[1]  # move bottom to y=0
+glyph.transform((1, 0, 0, 1, 0, yshift))
+s = scale / 100.0
+glyph.transform((s, 0, 0, s, 0, 0))
 glyph.width = 1024
 
 icons.generate("/tmp/icons.ttf")