Yes the @ file is in the XCF but i didnt know the unicode.
This should be in the readme file - bottom
IMAGE NAME GUIDE - MAP ID IS ALSO IMAGE NAME - just add the png extension.
For instance
map id="A" means this images name is A.png (it IS case sensitive!)
map id="bracketright" means this images name is bracketright.png
<map id="A" unc="65" />
<map id="B" unc="66" />
<map id="C" unc="67" />
<map id="D" unc="68" />
<map id="E" unc="69" />
<map id="F" unc="70" />
<map id="G" unc="71" />
<map id="H" unc="72" />
<map id="I" unc="73" />
<map id="J" unc="74" />
<map id="K" unc="75" />
<map id="L" unc="76" />
<map id="M" unc="77" />
<map id="N" unc="78" />
<map id="O" unc="79" />
<map id="P" unc="80" />
<map id="Q" unc="81" />
<map id="R" unc="82" />
<map id="S" unc="83" />
<map id="T" unc="84" />
<map id="U" unc="85" />
<map id="V" unc="86" />
<map id="W" unc="87" />
<map id="X" unc="88" />
<map id="Y" unc="89" />
<map id="Z" unc="90" />
<map id="a" unc="97" />
<map id="ampersand" unc="38" />
<map id="b" unc="98" />
<map id="braceleft" unc="123" />
<map id="braceright" unc="125" />
<map id="bracketleft" unc="91" />
<map id="bracketright" unc="93" />
<map id="c" unc="99" />
<map id="colon" unc="58" />
<map id="comma" unc="44" />
<map id="d" unc="100" />
<map id="degree" unc="176" />
<map id="dollar" unc="36" />
<map id="e" unc="101" />
<map id="eight" unc="56" />
<map id="equal" unc="61" />
<map id="exclam" unc="33" />
<map id="f" unc="102" />
<map id="five" unc="53" />
<map id="four" unc="52" />
<map id="g" unc="103" />
<map id="greater" unc="62" />
<map id="h" unc="104" />
<map id="hyphen" unc="45" />
<map id="i" unc="105" />
<map id="j" unc="106" />
<map id="k" unc="107" />
<map id="l" unc="108" />
<map id="less" unc="60" />
<map id="m" unc="109" />
<map id="multiply" unc="215" />
<map id="n" unc="110" />
<map id="nine" unc="57" />
<map id="o" unc="111" />
<map id="one" unc="49" />
<map id="p" unc="112" />
<map id="parenleft" unc="40" />
<map id="parenright" unc="41" />
<map id="percent" unc="37" />
<map id="period" unc="46" />
<map id="plus" unc="43" />
<map id="q" unc="113" />
<map id="question" unc="63" />
<map id="quoteleft" unc="8216" />
<map id="quoteright" unc="8217" />
<map id="quotesingle" unc="39" />
<map id="r" unc="114" />
<map id="s" unc="115" />
<map id="semicolon" unc="59" />
<map id="seven" unc="55" />
<map id="six" unc="54" />
<map id="slash" unc="47" />
<map id="space" unc="32" />
<map id="t" unc="116" />
<map id="three" unc="51" />
<map id="two" unc="50" />
<map id="u" unc="117" />
<map id="v" unc="118" />
<map id="w" unc="119" />
<map id="x" unc="120" />
<map id="y" unc="121" />
<map id="z" unc="122" />
<map id="zero" unc="48" />
As i said i haven't tested everything so you may want to try different extensions.You have to change every block though and there are over 70.
I have heard that even vectors will work.Agreeably creating the fonts in Inkscape and saving them as PNG that way would be ideal, but i have heard that the xml code will except SVG although i didn't test that either.
Further versions i guess.
Try some different things let me know how they work and the next release i will include them.