Deprecate key.sig

Revert changes to att.keySig.log and att.keySigDefault.log made earlier
Remove data.KEYSIGTOKEN

Fixes #434

source/specs/mei-source.xml

@@ -1900,16 +1900,6 @@
         </rng:data>
       </content>
     </macroSpec>
-    <macroSpec ident="data.KEYSIGTOKEN" module="MEI" type="dt">
-      <desc>A token describing the pitch name, inflection, and octave number of an altered pitch in
-        a key signature.</desc>
-      <content>
-        <rng:data type="token">
-          <rng:param name="pattern"
-            >[a-g][0-9](s|f|ss|x|ff|xs|sx|ts|tf|n|nf|ns|su|sd|fu|fd|nu|nd|1qf|3qf|1qs|3qs)</rng:param>
-        </rng:data>
-      </content>
-    </macroSpec>
     <macroSpec ident="data.LAYERSCHEME" module="MEI" type="dt">
       <desc>Indicates how stems should be drawn when more than one layer is present and stem
         directions are not indicated on the notes/chords themselves. '1' indicates that there is
@@ -6737,26 +6727,17 @@
     <classSpec ident="att.keySig.log" module="MEI.shared" type="atts">
       <desc>Logical domain attributes.</desc>
       <attList>
-        <attDef ident="fifths" usage="opt">
-          <desc>Indicates where the key lies in the circle of fifths.</desc>
-          <datatype>
-            <rng:ref name="data.KEYFIFTHS"/>
-          </datatype>
-        </attDef>
         <attDef ident="sig" usage="opt">
           <desc>Written key signature.</desc>
           <datatype maxOccurs="unbounded">
-            <rng:ref name="data.KEYSIGTOKEN"/>
+            <rng:ref name="data.KEYFIFTHS"/>
           </datatype>
         </attDef>
       </attList>
       <remarks>
         <p>Mixed key signatures, e.g. those consisting of a mixture of flats and sharps (Read, p.
           143, ex. 9-39), and key signatures with unorthodox placement of the accidentals (Read, p.
-          141) can be encoded using the <att>key.sig</att> attribute or the <gi scheme="MEI"
-            >keySig</gi> element. Each token in <att>key.sig</att> contains a pitch name,
-          accidental, and octave, 'e5f' for example, that indicate what key accidentals should be
-          rendered and where they should be placed.</p>
+          141) can be encoded using the <gi scheme="MEI">keySig</gi> element.</p>
       </remarks>
     </classSpec>
     <classSpec ident="att.keySig.vis" module="MEI.visual" type="atts">
@@ -6803,26 +6784,17 @@
       <desc>Used by staffDef and scoreDef to provide default values for attributes in the logical
         domain that are related to key signatures.</desc>
       <attList>
-        <attDef ident="key.fifths" usage="opt">
-          <desc>Indicates where the key lies in the circle of fifths.</desc>
-          <datatype>
-            <rng:ref name="data.KEYFIFTHS"/>
-          </datatype>
-        </attDef>
         <attDef ident="key.sig" usage="opt">
           <desc>Written key signature.</desc>
           <datatype maxOccurs="unbounded">
-            <rng:ref name="data.KEYSIGTOKEN"/>
+            <rng:ref name="data.KEYFIFTHS"/>
           </datatype>
         </attDef>
       </attList>
       <remarks>
         <p>Mixed key signatures, e.g. those consisting of a mixture of flats and sharps (Read, p.
           143, ex. 9-39), and key signatures with unorthodox placement of the accidentals (Read, p.
-          141) can be encoded using the <att>key.sig</att> attribute or the <gi scheme="MEI"
-            >keySig</gi> element. Each token in <att>key.sig</att> contains a pitch name,
-          accidental, and octave, 'e5f' for example, that indicate what key accidentals should be
-          rendered and where they should be placed.</p>
+          141) can be encoded using the <gi scheme="MEI">keySig</gi> element.</p>
       </remarks>
     </classSpec>
     <classSpec ident="att.keySigDefault.vis" module="MEI.visual" type="atts">