fixed Time 2 settings page; fixed startup heart-rate panel flash; persisted heart-rate setting on watch
Version 1.1.3: fix a bug that could leave weather stale or missing before the next scheduled refresh.
Version 1.1.2: fix a bug that cleared cached weather too soon.
Version 1.1.1: add 30-minute weather caching, improve battery readability, and refine Time 2 behavior.
Version 1.1: improve battery readability, refine hub line weights by platform, and update Time 2 and Round 2 layouts.
Initial release.