updataMeta need to be patched for deleting column

There's some problem when delete column with meta information handling.
Because of this, columns right after has wrong meta infomations. (has meta informations of deleted column)

I tried to fix this issue like followins for temporary, but doesn't look good.. please check and give your opinions..

obj.updateMeta = function(affectedCells) {
if (obj.options.meta) {
var newMeta = {};
var keys = Object.keys(obj.options.meta);
for (var i = 0; i < keys.length; i++) {
if (affectedCells[keys[i]]) {
...
+ } else if (Object.values(affectedCells).indexOf(keys[i]) == -1) {
...
}
}
// Update meta information
obj.options.meta = newMeta;
}
}

Start at the updateMeta function shown in the issue and reproduce deleting a column that has metadata. Trace how affectedCells is handled, then verify that columns after the deleted column retain their own metadata rather than inheriting the deleted column's information.