This release fixes a segmentation fault introduced in the last release related to glib logging.

Fixes:
- Update glib dependency, which fixes a SIGSEGV when using glib as a log backend and the output is being captured by systemd.

This is a small release with only minor changes in preperation for a Flathub release.

Changes:
- An appstream metadata file was added and is installed to the metainfo directory
- `gtk4-update-icon-cache` instead of the gtk3 variant is used during post-install
- The application id was changed to `org.pipewire.Helvum`
- Bash build scripts were removed and their work is done directly via meson instead

In addition, the upstream URL has changed to https://gitlab.freedesktop.org/pipewire/helvum

0.3.2

Changes:
- Links where the endpoint is left of the start point and on the same height now have
  a slight vertical component in their curve so they don't appear as a single line
- Links now use a gray instead of black color for better constrast

Fixes:
- Build scripts now use bash instead of sh, as they were already using bash features before,
  which could lead to problems where sh is not a symlink to bash

Also, from now on, releases will have a source tarball with vendored cargo dependencies attached, so that releases can be built offline easier.

Helvum is now built via meson, which will install new icons and a new .desktop
file in addition to the binary.

The plain cargo build still works (for now), but will not install the additional resources.
In the future, a plain cargo build may become unsupported.

Changes:
- Add meson as new primary buildsystem.
- Add application icon and symbolic icon
- Add .desktop file