crystal 0.30.0

[bcardiff]

• Version bump of sources
• Upgrade finally llvm to llvm@8. I would've prefered to use llvm@8 explicitly put the audit complain about using an alias.
• man pages for crystal and shards included

[lembacon]

Thanks @bcardiff!

[andrius]

I am not sure if it's right place to post a bug; but crystal 0.30.0 won't compile on debian with linuxbrew. I keep it installing on vps overnight, it just open muiltiple threads like below, nothing else happened.

11598 98.9 21.7 1829568 1780184 pts/2 RNl+ 12:26   1:39 /tmp/crystal-20190810-7831-1g3hw8s/crystal-0.30.0/boot/bin/../lib/crystal/bin/crystal build -D without_openssl -D without_zlib -D preview_overflow -o .build/crystal src/compiler/crystal.cr --release --no-debug

[issyl0]

@andrius If you could please open an issue in Homebrew/linuxbrew-core for your issue with Crystal, that's where the Linux formulae are managed.