Changes:
- Fix an issue where the headerbar is overly large

Changes:
- Helvum has been ported to libadwaita, and now requires libadwaita >= 1.3 to build.
- The graph UI has been redesigned to fit the libadwaita style and to improve usability and looks.
  Nodes now have a background, ports are split into a label and a round handle, and more minor changes.
- Ports are now added and removed more reliably from nodes, and are sorted by name.
- An "About" window has been added, and can be opened using the new primary menu, opened by a button in the headerbar.
- The application no longer enters an unusable state if the app can't connect to the pipewire server, or loses connection.
  Instead, the app will attempt to reconnect on an interval, and display a banner in the UI to notify the user that the app is not connected.

Changes:
- Nodes are now allocated their proper size when the graph is zoomed, so that
  they do not become smaller when the graph is zoomed in.
- When dragging a port to create a link, a link is now drawn from the port
  to the cursor position to visualize the linking process.
  If hovering over a compatible port, the link snaps to that port.
- Multiple internal improvements.

Improvements:
The graphview is no longer renders content outside the visible area and uses less CPU drawing, which should improve performance greatly.

The graphview can now be zoomed. Zooming is possible via two-finger-gesture, CTRL+Scrolling, and a zoom widget in the header bar.

The graphview now has a fixed size, and the view is initially centered in middle.

Labels on nodes and ports now may use multiple lines when too long, and very long labels will be ellipsized.
A new tooltip is displayed when hovering a label, which displays the full name and is never ellipsized.

The label for a node now prefers displaying the `node.description` property over the `node.nick` property of a pipewire node,
which is usually more human-readable and helpful, and also matches the behaviour of other tools.

Helvum should build again with pipewire versions 0.3.64 and 0.3.65 due to an updated `pipewire` dependency.

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