matze/wastebin 3.0.0 on GitHub

WASTEBIN_THEME configuration key to change the default theme from ayu to base16ocean, coldark, gruvbox, monokai, onehalf or solarized.
UI button to switch between light and dark mode and cookie to store the preference. By default the system setting is used.
UI button and c to copy content to clipboard. Thanks @limitcool.

Breaking: From now on, WASTEBIN_BASE_URL is only used for the QR code link but not for internal routing. Use a dedicated proxy server to do that if necessary.
Breaking: Always return HTML on /:id even if text/html is not in the Accept header. Use the /raw/:id endpoint to retrieve raw text.
Breaking: Replace WASTEBIN_MAX_PASTE_EXPIRATION with a customizable set of expirations via the WASTEBIN_PASTE_EXPIRATIONS variable.
Use the two-face crate for an extended syntax list.
Use 64-bit integers that render as 11-character identifier from now on. Existing 32-bit/6-character identifiers continue to work. Based on a PR #71 by @cgzones.
Use title as downloaded filename instead of identifier if one is available.
Serve all CSS assets under hashed URL to avoid caching issues and set cache-control header to one month and the immutable attribute.
Do not offer any interactions for burn-after-reading pastes that will end up with a 404 anyway.