yafc: update to 1.3.2
SDL2: update to 2.0.3
qpid-cpp: update to 0.26

Also, remove a workaround that's no longer needed.
minecraft: update to latest launcher

I changed the versioning scheme to the latest launcher date, which is
independent of minecraft version and is actually what the expression gets.
hashcat: version 0.47

Signed-off-by: Austin Seipp <aseipp@pobox.com>
p0f: version 3.06b

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Merge pull request #2084 from thoughtpolice/security

Add tools: p0f & hashcat
structured-haskell-mode: re-generate with latest cabal2nix
Merge pull request #2082 from cpages/update

Updates for maintained packages