Semi-automatic update. These checks were done:
- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 1.0.2 with grep in /nix/store/dyf9dj8j9nlhh3kv4zvg6aj85hw5k42n-gssdp-1.0.2
- found 1.0.2 in filename of file in /nix/store/dyf9dj8j9nlhh3kv4zvg6aj85hw5k42n-gssdp-1.0.2
* Remove package name
* Start with upper case letter
* Remove trailing period
Also reword some descriptions and move some long descriptions to
longDescription.
I'm not touching generated packages.
