Sunset Predictor third-party libraries

SunCalc 1.9.0: BSD-2-Clause, (c) Vladimir Agafonkin.
Source: https://github.com/mourner/suncalc/tree/v1.9.0
See SUNCALC-LICENSE.

exifr 7.1.3: MIT, (c) Mike Kovarik. See EXIFR-LICENSE.
Source: https://github.com/MikeKovarik/exifr/tree/v7.1.3
The separate exif-compat.js adapts format detection for longer HEIC ftyp boxes.

heic-to 1.5.2: LGPL-3.0-or-later. See HEIC-TO-LICENSE and GPL-3.0.txt.
The unmodified, separately loaded JavaScript library contains libheif 1.22.2.
Upstream source and build instructions: https://github.com/hoppergee/heic-to/tree/v1.5.2
Source package: https://registry.npmjs.org/heic-to/-/heic-to-1.5.2.tgz
libheif source: https://github.com/strukturag/libheif/tree/v1.22.2
libde265 source: https://github.com/strukturag/libde265/tree/v1.0.16
You may replace or modify this separate library under its license, including
reverse engineering the application to debug your library modifications.
The application's photograph rights do not limit these library rights.

Preview conversion happens locally. Original photo bytes are never replaced
by a converted preview.