fix potential crash related to sunrise/sunset edge cases (hopefully); fix rendering issue on emery
new preset themes, platform-specific subpixel dithering
reworked config page, custom color schemes, b/w watch support
nicer antialiasing, extra high contrast mode
better dithering, fix artifacts with certain fixed-color styles
restore default behavior of sunrise/sunset markers (shown only after shake)
allow configuring 12/24h mode, allow matching time text to background color (new default), reorganize config page
smoother dithering, more vivid sunrises & sunsets
initial release to core devices appstore