hseditor.HasChanges should more precisely check data

[gucio321]

Hi there,
currently our hseditor.HasChanges method does as follows:

                newData := editor.GenerateSaveData()
                if newData != nil {
                        oldData, err := e.Path.GetFileBytes()
                        if err == nil {
                                return !bytes.Equal(oldData, newData)
                        }
                }

but most of our encoders aren't as precise. They are encoding data, but sometimes in a bit changed order e.t.c...
HasChanges should really check if edited (viewed) structure has changes.