Changes since 4.6:

• Use XDG cache dir to store temporary files (https://github.com/audacious-media-player/audacious/issues/1817)
• Accept embedded lyrics in more cases (https://github.com/audacious-media-player/audacious/issues/1818)
• Bump .so and plugin ABI versions retrospectively (https://github.com/audacious-media-player/audacious/issues/1819)
• Include Georgian translation (https://github.com/audacious-media-player/audacious/issues/1820)
• Fix build on systems using musl instead of glibc (https://github.com/audacious-media-player/audacious/pull/1823) Thanks to all the contributors and bug reporters.