The UX and performance of search is relatively poor because each keystroke triggers a search & update. With this changes:
1. Search queries are moved into an IO thread so that typing is smooth and data sends happend in the background.
2. Text changed are debounced by 300 millis, meaning search will not be fired off on every keystroke, but rather only when we the user stops typing for 300 millis.
Habib Okanla
cd9f359add