Updates to the Lucida OpenType fonts.

 6nov12 1.6 - make U+2202 an upright partial differential, so that
              the unicode-math options work as intended.
              U+1D715 remains as an always-italic partial.
              Removed the ss20 feature.

25oct12 1.5 - correct glyphs used with ss04.
	    - correct \widetilde accent placement.
	    - use a less-Y like glyph for Upsilon.

 1jul12 1.4 - duplicate glyphs instead of using OT features.

10jun12 1.3 - add U+2329 and U+232A angle brackets for Word.
            - provide delimiters in Demibold math font.

 6may12 1.2 - fix swapped display U+2A05 and U+2A06.

30mar12 1.1 - avoid gaps between parts of extensible horizontal arrows.
            - tiny doc tweaks.

10mar12 1.0 - first release.