LDC 1.12.0-beta2 (based on LLVM 7)

[kinke]

Glad to announce the second beta for LDC 1.12.

* Based on D 2.082.0+ (today's DMD stable).
* Support for LLVM 7, which is used for the prebuilt packages.
   Due to an LLVM 7.0.0 regression, the prebuilt x86[_64] LDC 
binaries
   require a CPU with SSSE3.
* New, Easy::jit-like interface for dynamic/JIT compilation.

Full release log and downloads: 
https://github.com/ldc-developers/ldc/releases/tag/v1.12.0-beta2

Thanks to all contributors!