BigDice v0.3.0

Windows binaries for BigDice v0.3.0.

Verify before running:

1. Import the release key (in the repo as KEY.asc, and on keys.openpgp.org):
   gpg --import KEY.asc
   Fingerprint must be: A1E9 53B2 5C6A 623B 77A1 D522 3AC4 BBCF E51A B37D
2. Check the manifest signature:
   gpg --verify SHA256SUMS.txt.asc SHA256SUMS.txt
3. Check the binaries against the manifest:
   Linux: sha256sum -c SHA256SUMS.txt
   Windows: (Get-FileHash .\BigDice.exe).Hash and compare to SHA256SUMS.txt

The "Source code" zip/tar.gz assets below are auto-generated by GitHub and are
not covered by SHA256SUMS.txt; to verify the source, clone the repository, run
git verify-tag v0.3.0, and build from that signed tag as described in the README.