Encoding of spaces like +

[psamusev]

Inside default str_serializer you convert encoded spaces to '+'. Did you have any big reasons to make it. For me it breaks recognition after navigation to url - I use @angular/router

Broken workflow:

• If I serialize value='query query' I will get 'query+query' after deserialization
• If I serialize value='query+query' I will get the same 'query+query' after deserialization but they should be different