upgraded to python3.5 and made makepass parametrizable

zshrc

@@ -223,7 +223,11 @@ save_dotfiles(){
 
 
 makepass(){
-    cat /dev/urandom | base64 | head -c 20
+    LEN=20
+    if [ $# > 0 ] ; then
+      LEN=$1
+    fi
+    cat /dev/urandom | base64 | head -c $LEN
     echo ''
 }