Fix linking: undertie, not combining double breve

(manual copy of a1f5afd)

Author: wjandrea

layouts/IPA.onboard

@@ -316,7 +316,7 @@
         <key char="∣" group="extra" id="B5" tooltip="minor (foot) group" label="∣"/>
         <key char="∥" group="extra" id="B6" tooltip="major (intonation) group" label="∥"/>
         <key char="." group="extra" id="B7" tooltip="syllable break" label="."/>
-        <key char="͜" group="extra" id="B8" tooltip="linking" label="⚬͜⚬"/>
+        <key char="͜‿" group="extra" id="B8" tooltip="linking" label="‿"/>
 
 
 

layouts/IPA_Compact.onboard

@@ -315,7 +315,7 @@
         <key char="∣" group="extra" id="B5" tooltip="minor (foot) group" label="∣"/>
         <key char="∥" group="extra" id="B6" tooltip="major (intonation) group" label="∥"/>
         <key char="." group="extra" id="B7" tooltip="syllable break" label="."/>
-        <key char="͜" group="extra" id="B8" tooltip="linking" label="⚬͜⚬"/>
+        <key char="‿" group="extra" id="B8" tooltip="linking" label="‿"/>