add symbol key hints above letters on colemak layout

app/src/main/res/xml/rowkeys_colemak2.xml

@@ -23,32 +23,53 @@
 >
     <Key
         latin:keySpec="a"
+        latin:keyHintLabel="\@"
+        latin:additionalMoreKeys="\\@"
         latin:moreKeys="!text/morekeys_a" />
     <Key
         latin:keySpec="r"
+        latin:keyHintLabel="#"
+        latin:additionalMoreKeys="#"
         latin:moreKeys="!text/morekeys_r" />
     <Key
         latin:keySpec="s"
+        latin:keyHintLabel="$"
+        latin:additionalMoreKeys="$"
         latin:moreKeys="!text/morekeys_s" />
     <Key
         latin:keySpec="t"
+        latin:keyHintLabel="%"
+        latin:additionalMoreKeys="%"
         latin:moreKeys="!text/morekeys_t" />
     <Key
         latin:keySpec="d"
+        latin:keyHintLabel="&amp;"
+        latin:additionalMoreKeys="&amp;"
         latin:moreKeys="!text/morekeys_d" />
     <Key
         latin:keySpec="h"
+        latin:keyHintLabel="-"
+        latin:additionalMoreKeys="-"
         latin:moreKeys="!text/morekeys_h" />
     <Key
         latin:keySpec="n"
+        latin:keyHintLabel="+"
+        latin:additionalMoreKeys="+"
         latin:moreKeys="!text/morekeys_n" />
     <Key
         latin:keySpec="e"
+        latin:keyHintLabel="("
+        latin:additionalMoreKeys="("
         latin:moreKeys="!text/morekeys_e" />
     <Key
         latin:keySpec="i"
+        latin:keyHintLabel=")"
+        latin:additionalMoreKeys=")"
         latin:moreKeys="!text/morekeys_i" />
+    <!-- U+2026: "…" HORIZONTAL ELLIPSIS -->
     <Key
         latin:keySpec="o"
+        latin:keyHintLabel="&#x2026;"
+        latin:additionalMoreKeys="&#x2026;"
         latin:moreKeys="!text/morekeys_o" />
 </merge>

app/src/main/res/xml/rowkeys_colemak3.xml

@@ -23,20 +23,35 @@
 >
     <Key
         latin:keySpec="z"
+        latin:keyHintLabel="*"
+        latin:additionalMoreKeys="*"
         latin:moreKeys="!text/morekeys_z" />
     <Key
+        latin:keySpec="!text/keyspec_x"
+        latin:keyHintLabel="&quot;"
+        latin:additionalMoreKeys="&quot;"
         latin:keySpec="x" />
     <Key
         latin:keySpec="c"
+        latin:keyHintLabel="&apos;"
+        latin:additionalMoreKeys="&apos;"
         latin:moreKeys="!text/morekeys_c" />
     <Key
         latin:keySpec="v"
+        latin:keyHintLabel=":"
+        latin:additionalMoreKeys=":"
         latin:moreKeys="!text/morekeys_v" />
     <Key
-        latin:keySpec="b" />
+        latin:keySpec="b" 
+        latin:keyHintLabel=";"
+        latin:additionalMoreKeys=";" />
     <Key
         latin:keySpec="k"
+        latin:keyHintLabel="!"
+        latin:additionalMoreKeys="!"
         latin:moreKeys="!text/morekeys_k" />
     <Key
-        latin:keySpec="m" />
+        latin:keySpec="m" 
+        latin:keyHintLabel="\?"
+        latin:additionalMoreKeys="\\?" />
 </merge>