Ensure package links exist when releasing

Author: jryans

release.sh

@@ -9,6 +9,9 @@ set -e
 
 cd `dirname $0`
 
+# This link seems to get eaten by the release process, so ensure it exists.
+yarn link matrix-js-sdk
+
 for i in matrix-js-sdk
 do
     echo "Checking version of $i..."