[Light] add /Schwa from Latin S charset

cc57d9001

8 file(s) changed

Dunbar_Tall_CYR-Light_CY.ufo: glyphs.bg1/S_chwa.glif; glyphs.bg1/Z_ecyrillic.copy_1.glif; glyphs.bg1/contents.plist; glyphs.bg2/Z_ecyrillic.copy_1.glif; glyphs.bg2/contents.plist; lib.plist; glyphs/S_chwa.glif; glyphs/contents.plist