Collection addFilter should not change the collection itself

[melanke]

searchFiltering() {
  this.collection.addFilter({ id: 3 }).list()
}

search() {
  // I should be able to do this without the need to remove the filter
  this.collection.list()
}

[melanke]

Actually, now I understand why it was designed like this, the real problem is the name of this object, it is not just a collection, it is a manageable list, that you can append filters and stuff. Should we change it's name?