LDC 1.30.0

[kinke]

Glad to announce LDC 1.30.0. Major changes:

- Based on D 2.100.1.
- LLVM for prebuilt packages bumped to v14.0.3. All target 
architectures supported by LLVM are enabled now.
- Dropped LDC ltsmaster (v0.17.x) as supported host compiler. 
Like DMD, the min D version for bootstrapping is v2.079 (or GDC 
v9.x) now.
- Dropped support for LLVM < 9.
- New LeakSanitizer support via `-fsanitize=leak`.
- New prebuilt universal macOS package, runnable on both x86_64 
and arm64, and enabling x86_64/arm64 macOS/iOS cross-compilation 
targets out of the box.

Full release log and downloads: 
https://github.com/ldc-developers/ldc/releases/tag/v1.30.0

Thanks to all contributors & sponsors!