lume : Some improments and Negentropy (#219)

* feat: adjust default window size

* feat: save window state

* feat: add window state plugin

* feat: add search

* feat: use negentropy for newsfeed

* feat: live feeds

* feat: add search user

https://github.com/lumehq/lume/commit/0fec21b9cec0f611ec0800944fe46698f2afe5c2