1.0.0-dev.201

feat(shell): keep Prism running when its window closes (#62)

* feat(shell): keep Prism running when its window closes

* style(client): round the search field and drop its icon

* fix(client): take the caret only once the code boxes have settled

* fix(client): centre the intro art on the prism, not on the drawing

* fix(shell): stop the run handler binding a name only macOS reads