boolstuff: 0.1.15 -> 0.1.16

Semi-automatic update. These checks were performed:

- built on NixOS
- ran `/nix/store/ji68d52l18c35b8j96naan8ippmm4zqw-boolstuff-0.1.16/bin/booldnf --help` got 0 exit code
- ran `/nix/store/ji68d52l18c35b8j96naan8ippmm4zqw-boolstuff-0.1.16/bin/booldnf --help` and found version 0.1.16
- found 0.1.16 with grep in /nix/store/ji68d52l18c35b8j96naan8ippmm4zqw-boolstuff-0.1.16
- found 0.1.16 in filename of file in /nix/store/ji68d52l18c35b8j96naan8ippmm4zqw-boolstuff-0.1.16